The appeal concerns the two defenses and counterclaims interposed in a foreclosure action. Plaintiffs’ conveyance to defendants and defendants’ purchase-money mortgage to plaintiffs were given, each on December 22, 1960, pursuant to contract of sale of December 15, 1960, whereby, among other things, plaintiffs agreed to execute a “ guarantee !? ° * that any damage caused prior to August 1,1961 by the settling of the floor of the garage shall be repaired by the sellers”. The first defense and counterclaim pleads this guarantee, its breach, a consequent failure of consideration for the mortgage, and damage in the amount of $850. It is conceded that the floor did settle, that plaintiffs’ contractor performed some work to correct the condition and that additional work remains to be done. Plaintiffs do not dispute the validity of the guarantee or their liability thereunder but assert that their contractor “ substantially completed ” the necessary repairs, that a “few repairs remained to be done” but that their liability therefor was extinguished when their contractor “ agreed with the defendants to defer final completion until the following spring ”, In respect of this contention, the trial court found only that, “ Whatever may ha.ve been the damage * * * the contractor 9 * 9 testified that * 9 s' he had always been willing to correct the condition ‘ and still will ’.” Plaintiffs did not, in their reply, plead in defense a new agreement in substitution of the guarantee but, on the contrary, alleged full performance of the latter. Neither, so far as the record discloses, was such a theory urged upon the trial. Under
