Beal v. Krock ( 1998 )


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  •  [NOT FOR PUBLICATION--NOT TO BE CITED AS PRECEDENT]
    United States Court of Appeals
    For the First Circuit
    No. 97-2241
    BEAL BANK S.S.B. F/K/A BEAL BANC S.A.,
    Plaintiff, Appellant,
    v.
    RICHARD H. KROCK,
    Defendant, Appellee.
    APPEAL FROM THE UNITED STATES DISTRICT COURT
    FOR THE DISTRICT OF MASSACHUSETTS
    [Hon. Edward F. Harrington, U.S. District Judge]
    Before
    Lynch, Circuit Judge,
    Campbell and Bownes, Senior Circuit Judges.
    David D. Pavek, with whom James R. Everson, Messner, Pavek &
    Reeves, LLC., William V. Sopp, John F. Tocci, and Finnegan, Hickey,
    Dinsmoor & Johnson, P.C., were on brief for appellant.
    Alan M. Spiro, with whom Edwards & Angell were on brief for
    appellee.
    September 3, 1998
    BOWNES, Senior Circuit Judge.  In this debt collection
    case, the plaintiff, Beal Bank S.S.B. ("Beal Bank"), seeks to
    collect on a note that was part of a written settlement agreement
    containing a clause that precluded oral modifications.  The debtor,
    Richard H. Krock, interposes what he claims was a subsequent oral
    modification of the contract.  The district court, after trial,
    found that the oral modification was in fact agreed upon and was an
    enforceable contract under Massachusetts law.  The court concluded
    therefore that the debtor was not liable to the bank.  Holding that
    the district court's findings of fact were not clearly erroneous,
    and applying the law of Massachusetts in this diversity action, we
    affirm the court's conclusion that the oral modification was
    enforceable.  We remand nevertheless for recalculation of the
    amount owed.
    Facts
    In 1991, Pier 37 Associates Limited Partnership ("Pier
    37") executed a promissory note in the amount of $3.6 million to
    First Mutual Bank for Savings.  This note was secured in part by a
    mortgage on a marina located in Falmouth, Massachusetts.  In
    addition, defendant Richard H. Krock, who was a general partner of
    Pier 37, gave a personal guarantee of the note, limited to
    $1,600,000.
    When First Mutual Bank became insolvent, the Federal
    Deposit Insurance Corporation ("FDIC") took over its assets.  The
    FDIC sued Pier 37, Krock, and others, to collect on the note.
    While the case was pending, the FDIC assigned its interest in the
    note to BSB Mortgage, Inc. ("BSB"), an affiliate of Beal Bank, for
    approximately $1,000,000.  In turn, BSB assigned its interest to
    Beal Bank.
    In 1993, Beal Bank foreclosed on the property.  The
    parties to the litigation, after substantial negotiations, entered
    into a settlement agreement whereby Krock paid Beal Bank $150,000
    in cash and executed a $350,000 promissory note, payable over ten
    years in annual installments.  The agreement contained a clause
    stating that it was complete and integrated, and that no subsequent
    modifications could be made to the agreement except in writing.
    Krock testified that he negotiated an oral side agreement
    in which Beal Bank would, if the property sold for over $900,000,
    reduce Krock's debt by two-thirds of the amount by which the sale
    price exceeded $900,000.  Krock first discussed this side agreement
    with Will Balthrope, then a vice president of Beal Bank, prior to
    the execution of the settlement agreement.  Krock testified that
    Balthrope once again agreed to the offset plan after execution but
    before Beal Bank sold the marina in 1995 for $1,505,000.  The
    excess of the sale price over $900,000 was $605,000, so, under
    Krock's interpretation of the side agreement, his obligation would
    be reduced by two-thirds of that, or $403,333.  Because this
    reduction exceeds the face amount of Krock's note to Beal Bank,
    Krock asserts he owes Beal Bank nothing.
    The district court, after a bench trial, ruled that the
    side agreement did exist, implicitly found it valid under
    Massachusetts law, and applied the agreement to reduce Krock's debt
    to zero.  The court's decision turned on its finding that Krock was
    entirely credible in his testimony regarding the side agreement.
    The court also noted that Balthrope, who was the only other person
    besides Krock with personal knowledge of whether or not there was
    a subsequent oral modification, and who therefore could have
    supported the Bank's position that Krock's oral agreement claim was
    untrue, was inexplicably not called to the stand nor was his
    testimony preserved, although he had been a bank employee up until
    two months before trial.  Beal Bank appealed the district court's
    decision.
    Discussion
    Two issues control the outcome of this case.  One is
    factual:  was there a side agreement made between Krock and
    Balthrope, and was it made after the execution of the written
    settlement agreement?  The unrebutted testimony of Krock, accepted
    as credible by the district court, plays a major role in answering
    this question.  The second issue is legal:  even if Krock's
    testimony is taken as 100% true as to the existence and timing of
    the side agreement, would such an oral side agreement be
    enforceable under Massachusetts law to modify the terms of the
    written and completely integrated settlement agreement?  We begin
    our analysis with the pertinent Massachusetts law.
    We have previously summarized the relevant aspects of
    Massachusetts contract law as follows:
    Evidence of prior or contemporaneous oral
    agreements cannot be admitted to vary or
    modify the terms of an unambiguous written
    contract.  New England Fin. Resources, Inc. v.
    Coulouras, 
    566 N.E.2d 1136
    , 1139 (Mass. App.
    Ct. 1991) (parol evidence rule precludes use
    of oral evidence to modify integrated
    agreement); Aerostatic Eng'g Corp. v.
    Szczawinski, 
    294 N.E.2d 521
    , 522 (Mass. App.
    Ct. 1973) (oral agreement cannot modify
    payment terms unambiguously expressed in
    written contract).  Instead, "parties are
    bound by the plain terms of their contract."
    Hiller v. Submarine Signal Co., 
    91 N.E.2d 667
    ,
    669 (1950) (restrictive agreement between
    industrial park developer and park tenant
    interpreted according to meaning of
    unambiguous written agreement).
    Fairfield 274-278 Clarendon Trust v. Dwek, 
    970 F.2d 990
    , 993-94
    (1st Cir. 1992).
    Thus, if Krock's side agreement with Balthrope was made
    before the execution of the written settlement agreement, then the
    written agreement supersedes it and the side agreement is barred by
    the parol evidence rule.  See 
    id. In the
    present case, Beal Bank devoted a great deal of
    its opening brief to its assertion that the parol evidence rule
    bars testimony about an oral modification made prior to the
    execution of the settlement agreement.  Yet at trial the district
    court sustained each and every objection that was properly made
    under the parol evidence rule.  Krock's brief pointed this out, and
    made clear that Krock was not relying on the pre-execution
    negotiations to modify the written instrument.  Rather, he rested
    his defense on the contention that he and Balthrope agreed to a
    subsequent modification of the settlement agreement.
    Under Massachusetts law, if a subsequent agreement is
    made, after the execution of a written contract, it may be
    enforceable.  See New England Factors v. Genstil, 
    76 N.E.2d 151
    ,
    154 (Mass. 1947) (holding that the parol evidence rule does not
    apply "where the terms of a written agreement have been modified by
    subsequent oral agreement").  As a leading authority has put it:
    Because the parol evidence rule applies only
    to precontractual negotiations, it does not
    bar evidence of subsequent negotiations to
    show modification of the contract.  Even a
    completely integrated agreement can therefore
    be modified or rescinded orally.
    E. Allan Farnsworth, Contracts  7.6 (2d ed. 1990).  Thus, "[t]he
    parol evidence rule has no application to the situation . . . where
    it could be found that a new oral contract was entered into between
    the parties which superseded the original contract."  L.W.
    Severance & Sons, Inc. v. Angley, 
    125 N.E.2d 415
    , 420 (Mass. 1955).
    Even a fully integrated contract   i.e., a written contract
    containing a clause stating that subsequent modifications must be
    in writing   may, under appropriate circumstances and with
    appropriate proof, be modified by a subsequent oral agreement.  SeeCambridgeport Sav. Bank v. Boersner, 
    597 N.E.2d 1017
    , 1022 (Mass.
    1992) ("[A] provision that an agreement may not be amended orally
    but only by a written instrument does not necessarily bar oral
    modification of the contract."); cf. 
    Farnsworth, supra
    ,  7.6 ("Can
    the parties, by inserting a no-oral-modification clause,
    effectively permit only written modifications?  The common-law
    answer has been that they cannot."); Wagner v. Graziano Const. Co.,
    
    136 A.2d 82
    , 83 (Pa. 1957) ("The most ironclad written contract can
    always be cut into by the acetylene torch of parol modification
    supported by adequate proof. . . .  The hand that pens a writing
    may not gag the mouths of the assenting parties.").
    Massachusetts does, however, impose a heavy burden on the
    party seeking to modify an integrated written contract by a
    subsequent oral agreement:  "The evidence of a subsequent oral
    modification must be of sufficient force to overcome the
    presumption that the integrated and complete agreement, which
    requires written consent to modification, expresses the intent of
    the parties," at least as of that time, that the written agreement
    rather than any alleged subsequent oral modification should govern.
    
    Boersner, 597 N.E.2d at 1022
    n.10.  Whether the intent of the
    parties has changed is, of course, a question of fact to be
    determined by the trier of fact.
    Krock testified that he had a conversation with Balthrope
    after execution of the written agreement, and that Balthrope stated
    a new commitment to reduce Krock's debt obligation by two-thirds of
    any amount by which the sale price of the Pier 37 property exceeded
    $900,000.
    The district court found Krock's testimony to be
    credible:
    [T]he sole disputed factual issue pending
    before the Court is the credibility of the
    witness Defendant Krock regarding the
    existence of the Side Agreement.  I believe
    his testimony, as it was forthright and
    consistent and his demeanor while under
    intense cross-examination displayed the
    attitude of an individual who was telling the
    truth with conviction.
    Not only did the district court find Krock's testimony
    wholly believable, but it was essentially unrebutted.  In contrast
    with Krock's testimony as to the existence of the side agreement,
    the court noted that
    the only other witness to the Side Agreement
    was Mr. Balthrope who was not called to
    testify on behalf of [Beal Bank].  Although
    Mr. Balthrope was listed as a prospective
    witness by the [Bank] in its pretrial filings
    and left the employment of the bank only in
    July [approximately two months before the
    trial], for some inexplicable reason, he was
    not called to the stand nor was his testimony
    preserved by way of deposition.  Therefore,
    the credible testimony of the Defendant Krock
    stands unrebutted and I accept it.
    The court was entitled to draw an adverse inference
    against Beal Bank because of the absence of any testimony from
    Balthrope.  Balthrope was the only person, other than Krock, who
    had personal knowledge as to whether there was indeed a subsequent
    side agreement, and what such an agreement may have included.
    Moreover, for years prior to the trial, up until two months before
    trial, Balthrope was an employee of the Bank and under its control.
    Even Balthrope's termination, pursuant to a layoff, was within the
    Bank's control.  The bank had included Balthrope on its witness
    list up until the Friday before trial began.  Yet the Bank failed
    to present Balthrope's testimony to the court (through subpoena or
    otherwise) and failed to preserve his testimony through deposition.
    In light of all these circumstances surrounding the Bank's "missing
    witness," the court was entitled to draw an adverse inference
    against the Bank that Balthrope was not produced because his
    testimony would have been damaging, i.e., it would not have
    contradicted Krock's on the question of the subsequent oral
    modification.  See, e.g., Bath Iron Works Corp. v. United States,
    
    34 Fed. Cl. 218
    , 340-41 (1995), aff'd, 
    98 F.3d 1357
    (Fed. Cir.
    1996).  Nor did the bank attempt to rebut this inference by
    providing a legitimate explanation for its failure, such as might
    be the case if the witness had suddenly and unexpectedly died.
    The Bank did produce one witness in an effort to
    contradict Krock's testimony regarding the subsequent side
    agreement:  Steven D. Harper, a commercial loan officer at the bank
    for one year, who had taken over the Krock file from Balthrope.
    The district court considered Harper's demeanor under direct- and
    cross-examination, re-direct, re-cross, re-re-direct, and re-re-
    cross, and declined to rely on Harper's evidence to undercut
    Krock's testimony.  Harper's initial testimony was that he had had
    conversations with Balthrope "regarding the documentation on the
    Krock promissory note."  Harper had asked Balthrope whether there
    were any documents in the bank's files that would bear upon Krock's
    allegation that there was a subsequent side agreement.  Balthrope
    had told Harper that there were no such documents and that he "did
    not know of any agreement as such."  Harper's original testimony
    did not mention any discussion with Balthrope other than about
    written documentation.  There was nothing one way or the other
    about a possible oral modification, in Harper's direct, cross, re-
    direct, or re-cross examinations.  The only testimony by Harper on
    oral modification was on re-re-direct.  The district court was
    entitled to discount Harper's testimony on re-re-direct, based
    upon lack of credibility, regarding anything Balthrope told him
    other than about the existence or absence of documents in the
    files.  We find no clear error in the district court's decision to
    accept Krock's "unrebutted" testimony.
    In addition to the unrebutted credible testimony of
    Krock, the court, in determining intent, was entitled to consider
    the conduct of the parties.  "Mutual agreement on modification of
    the requirement of a writing may . . . be inferred from the conduct
    of the parties and from the attendant circumstances of the
    [particular] case."  
    Boersner, 597 N.E.2d at 1022
    (internal
    quotation marks omitted); see Schinkel v. Maxi-Holding, Inc., 
    565 N.E.2d 1219
    , 1223 (Mass. App. Ct.), rev. denied, 
    409 Mass. 1104
    (1991).  Here, the parties acted in a way that was consistent with
    Krock's testimony that there was a subsequent oral modification.
    When Krock's first payment was due under the settlement
    agreement, on November 1, 1994, he had no funds and did not pay it.
    The property had not yet been sold by the Bank; the sale did not
    take place until June 1, 1995.  Yet the Bank took no action against
    Krock in November 1994 nor in early 1995; indeed, it did not file
    suit against Krock until December 1995, more than six months after
    the sale of the Pier 37 property.  Krock testified as to a
    conversation he had with Balthrope after his default but before the
    sale.  According to Krock's unrebutted testimony, Balthrope told
    him the Bank "wouldn't do anything, he [Balthrope] wouldn't do
    anything until such time as the sale took place and . . . the
    reduction, if any, in the note could be quantified, and then the
    whole thing would be restructured based upon the reduced amount of
    the note and the reduced payment."  Consistent with this
    conversation, Krock waited until the sale took place; he did not
    pay any part of his $40,000 payment that was due on November 1,
    1994, nor in early 1995.  Likewise, the Bank took no action against
    him prior to its June 1, 1995 sale of the property.
    After the sale but before suit was filed against him,
    Krock had another conversation with Balthrope.  Krock told
    Balthrope that, in light of the high price received for the
    property, their oral agreement should wipe out his debt on the
    note.  Krock testified that Balthrope did not dispute the validity
    of the subsequent oral modification or Krock's interpretation of
    it; instead, he responded by saying "they're not going to pursue it
    anyway because the financials show that there is no ability to
    pay."  Although the Bank eventually did pursue Krock by filing
    suit in December 1995, the Bank's actions (or non-action) prior to
    that time is consistent with Krock's version of events.
    We conclude that the district court's acceptance of
    Krock's version of events was not clearly erroneous, even applying
    the requirement under Massachusetts law that Krock has to meet a
    heavier burden of proof in order for an oral modification to be
    effective against a written contract.  As part of that heavier
    burden, Massachusetts courts typically require "'ample evidence,'"
    demonstrating that "the party denying the existence of a
    modification had . . . 'unequivocally' expressed [its] approval 'of
    the many pertinent details' of the new agreement."  
    Boersner, 597 N.E.2d at 1022
    (quoting First Pa. Mortgage Trust v. Dorchester Sav.
    Bank, 
    481 N.E.2d 1132
    , 1139 (Mass. 1985)).  We think the above-
    described evidence is "ample," and the only "pertinent detail[]" of
    the new agreement was the offset by two-thirds of the sale price's
    excess over $900,000.  According to Krock's credible testimony,
    Balthrope agreed to this detail "unequivocally."
    We hold therefore that the district court did not clearly
    err in concluding that Krock's version of events was credible, nor
    did it err in its legal conclusion that the subsequent modification
    that Krock described is enforceable.  We turn briefly to the Bank's
    other arguments on appeal.
    The Bank contends that the alleged subsequent
    modification agreement fails because no consideration was given by
    Krock in exchange for the Bank's willingness to modify the amount
    of Krock's debt based on the sale price of the Pier 37 property.
    The Bank acknowledges that, "under appropriate proof, an oral
    modification may be found," but if so, "the new contract created by
    the subsequent modification must be supported by consideration."
    Bank Br. at 15 (citing Siegel v. Knott, 
    55 N.E.2d 889
    , 890 (Mass.
    1944) ("The mode of performance required by a written contract may
    be varied by a subsequent oral agreement based upon a valid
    consideration.")).  The Bank points out that Krock did not take any
    "action in reliance on the alleged reaffirmation of the prior
    agreement other than to continue to fail to make the payments he
    agreed to make under the Note."  
    Id. The Bank
    also relies heavily
    on 3 Richard A. Lord, Williston on Contracts  1826 (4th ed. 1992),
    as quoted in De Blois v. Boylston & Tremont Corp., 
    183 N.E. 823
    ,
    827 (Mass. 1933):
    [A] subsequent contract completely covering
    the same subject-matter and made by the same
    parties as an earlier agreement, but
    containing terms inconsistent with the former
    contract, so that the two cannot stand
    together, rescinds, substitutes and is
    substituted for the earlier contract and
    becomes the only agreement of the parties on
    the subject.  But the subsequent agreement
    must have sufficient consideration.  Therefore
    if the undertaking by one party is simply to
    perform the whole or part of what he promised
    in the original contract, it will not support
    a promise by the other party to perform what
    he previously agreed and something more.
    The Bank asserts that this is still good law in Massachusetts.
    As Krock points out, however, the Bank never made this
    consideration argument below.  Although Krock stated in his
    opposition to the Bank's motion in limine that consideration is not
    required for an oral modification to be effective against a written
    contract under Massachusetts law, the Bank did not respond in its
    pretrial motion papers, conferences, or at trial.  Moreover, after
    the district court ruled against it, the Bank failed to file any
    motion for a new trial or to alter or amend judgment within the
    ten-day period set forth in Rule 59 of the Federal Rules of Civil
    Procedure Rule.  And in the motion for reconsideration that the
    Bank filed on the twentieth day, the Bank again failed to mention
    lack of consideration as a defect in Krock's case.
    As we have said on numerous occasions, we will not
    consider on appeal issues that could have been, but were not,
    raised in the trial court.  See Sullivan v. National Football
    League, 
    34 F.3d 1091
    , 1097 n.1 (1st Cir. 1994); Desjardins v. Van
    Buren Community Hosp., 
    969 F.2d 1280
    , 1282 (1st Cir. 1992).  "An
    appeal is not an opportunity to conjure new arguments not raised
    before the district court."  Brown v. Hot, Sexy and Safer
    Productions, Inc., 
    68 F.3d 525
    , 530 (1st Cir. 1995); see NASCO,
    Inc. v. Public Storage, Inc., 
    29 F.3d 28
    , 31 n.4 (1st Cir. 1994)
    (holding that theory not presented to district court and raised for
    the first time on appeal is deemed waived).  In particular, having
    failed to object below (or to raise the issue at all), it is too
    late for the Bank to object that there was no evidence on which the
    court could find consideration to support the contract
    modification.  See Johnston v. Holiday Inns, Inc., 
    565 F.2d 790
    ,
    795 n.6 (1st Cir. 1977).  The argument has been waived.  See Howellv. FDIC, 
    986 F.2d 569
    , 572 (1st Cir. 1993).
    Even if we were to reach the merits of the Bank's
    consideration argument, it would not change our result.  The
    doctrine of consideration does not necessarily bar enforcement of
    a subsequent oral contract modification.  "Modifications . . . have
    long been recognized in law as valid, without additional
    consideration, even when based on oral agreements modifying
    executory written contracts."  Roddy & McNulty Ins. Agency, Inc. v.
    A.A. Proctor & Co., 
    452 N.E.2d 308
    , 314 (Mass. App. Ct.), rev.
    denied, 
    454 N.E.2d 1276
    (1983).  "The contract, when modified by
    the subsequent oral agreement, is substituted for the contract as
    originally made, and the original consideration attaches to and
    supports the modified contract."  Thomas v. Barnes, 
    31 N.E. 683
    ,
    684 (Mass. 1892).
    It remains, of course, a factual question whether a party
    intends to relinquish her contractual rights by entering into a
    subsequent agreement.  See Roddy & 
    McNulty, 452 N.E.2d at 314
    .  In
    the instant case, as 
    discussed supra
    , the district court assessed
    the evidence, in particular, Krock's credibility in recounting his
    description of events, the lack of credibility and of personal
    knowledge on the part of the Bank's witness, Harper, and the
    unexplained absence of the Bank's former vice president, Balthrope,
    who was the only person besides Krock who was privy to the actual
    conversations in dispute.  On the basis of its assessment of the
    evidence, the district court determined that a subsequent
    modification was indeed agreed upon by the parties and was
    enforceable.  The court's decision was not clearly erroneous.
    Beal Bank's final argument is that, even if the district
    court was correct that the subsequent oral modification was
    enforceable as testified to by Krock, the court erred in applying
    that modified agreement.  The district court calculated the amount
    by which the sale price of the Pier 37 property ($1,505,000)
    exceeded $900,000, i.e., $605,000, and multiplied it by two-thirds,
    for an offset of $403,333.  The court then applied this offset to
    the principal amount of Krock's obligation to the bank, $350,000.
    The court therefore determined that the offset totally extinguished
    Krock's debt.  Beal Bank argues that the $403,333 reduction should
    instead be applied against the gross amount of the obligation
    including accrued interest, late charges, and legal fees
    calculated as of the time of trial.  So calculated, Krock would
    still owe the bank over $100,000.
    Krock points out that Beal Bank failed to raise this
    offset argument at the district court level, including in its
    motion for reconsideration, where it made an entirely different
    argument.  Krock argues that the Bank has therefore waived its
    offset argument; it cannot be raised for the first time on appeal.
    See 
    Brown, 68 F.3d at 530
    .
    But prior to receiving Judge Harrington's ruling, Beal
    Bank did not know what offset terms he would hold were contained in
    the oral modification.  (The Bank did not even know whether Judge
    Harrington would find that the parties had agreed to an oral
    modification.)  Thus the Bank could not have raised its offset
    argument below, except through a post-trial motion, and such a
    motion is not a prerequisite for perfecting its appeal of the
    district court's judgment.  We turn therefore to the merits of the
    Bank's calculation argument.
    We agree with Krock that the Bank's argument does not
    make sense as to how to apply the offset.  We have found that the
    district court properly accepted Krock's testimony as to the nature
    and terms of the side agreement.  Thus, the proper calculation
    under the side agreement would apply two-thirds of the amount by
    which the sale price exceeded $900,000 against Krock's debt at the
    time the property was sold.  If this had been done at that time,
    Krock's debt would have been substantially reduced; there would be
    no basis for the Bank to have continued charging him interest and
    collection charges against the extinguished portion of the debt.
    Much of the debt as calculated by the Bank would have been erased.
    Therefore, we reject the Bank's position that interest and late
    charges should have continued to accrue on Krock's entire debt
    through the time of trial, before applying the orally agreed-upon
    offset.
    But we also think Krock's contention that the offset
    entirely canceled his obligation is exaggerated.  Krock argues on
    appeal that the premium should be applied against the $350,000 face
    amount of the note.  His testimony at trial was simply that it
    would be applied against "my debt."  The words "my debt" would
    seem, on their face, to include both the principal on the note and
    any interest that had accrued up until the time the offset kicked
    in.  When the Pier 37 property was sold, on or about June 1, 1995,
    there was at least some interest that had accrued since the date of
    the note in November 1993.  Krock points out that, as of
    November 8, 1995, the Bank was claiming that his debt was
    $449,010.86.  Thus, as of June 1, more than five months earlier,
    Krock's debt would have been somewhat less than that amount,
    including both principal and interest, but clearly more than the
    $350,000 face amount of the note that the district court used.  It
    appears that the total debt would have been more than the
    $403,333.33 offset that should have been applied against it,
    leaving some smaller amount still due.  And the Bank would now be
    entitled to interest that has subsequently accrued on that smaller
    amount, between the June 1, 1995 date of offset and the present.
    We do not, however, think it fair for the Bank to charge
    Krock for its attorneys' fees for this litigation, because it is
    not at all clear that any litigation would have been necessary if
    the Bank had simply sought to collect the smaller amount that we
    now hold it was due as of June 1, 1995, as opposed to denying the
    offset and seeking to collect the much larger amount that it
    claimed in this action (including an additional three years' worth
    of interest on $403,333).
    We therefore remand for a calculation of the proper
    amount owed, accepting Krock's testimony as to what exactly was
    contained in the subsequently agreed-upon modification of the
    original contract.  That is, the court should apply the offset as
    of the date of sale of the Pier 37 property, and apply it to
    Krock's accumulated total debt as of that date.  The district court
    should then calculate the interest that would have accrued on that
    reduced amount of debt, from that offset date through the present.
    Affirmed as to the existence of the oral modification and
    as to its terms; remanded for calculation of the amount owed under
    the modified contract.