Class B-1 Principal Distribution Amount With respect to any Distribution Date on or after the Stepdown Date, 100% of the Principal Distribution Amount for such Distribution Date if the Class A Certificate Principal Balance and the Class M Certificate Principal Balance, have been reduced to zero and a Stepdown Trigger Event exists, or as long as a Stepdown Trigger Event does not exist, the excess of (1) the sum of (A) the Class A Certificate Principal Balance (after taking into account distributions of the Class A Principal Distribution Amount on such Distribution Date), (B) the Class M-1 Certificate Principal Balance (after taking into account distributions of the Class M-1 Principal Distribution Amount on such Distribution Date), (C) the Class M-2 Certificate Principal Balance (after taking into account distributions of the Class M-2 Principal Distribution Amount on such Distribution Date), (D) the Class M-3 Certificate Principal Balance (after taking into account distributions of the Class M-3 Principal Distribution Amount on such Distribution Date), (E) the Class M-4 Certificate Principal Balance (after taking into account distributions of the Class M-4 Principal Distribution Amount on such Distribution Date, (F) the Class M-5 Certificate Principal Balance (after taking into account distributions of the Class M-5 Principal Distribution Amount on such Distribution Date, (G) the Class M-6 Certificate Principal Balance (after taking into account distributions of the Class M-6 Principal Distribution Amount on such Distribution Date and (H) the Class B-1 Certificate Principal Balance immediately prior to such Distribution Date over (2) the lesser of (A) 86.60% of the Stated Principal Balance of the Mortgage Loans as of such Distribution Date and (B) the excess of the Stated Principal Balance of the Mortgage Loans as of such Distribution Date over the Minimum Required Overcollateralization Amount. Notwithstanding the foregoing, (I) on any Distribution Date prior to the Stepdown Date on which the Certificate Principal Balance of each Class of Class A Certificates and Class M Certificates has been reduced to zero, the Class B-1 Principal Distribution Amount will equal the lesser of (x) the outstanding Certificate Principal Balance of the Class B-1 Certificates and (y) 100% of the Principal Distribution Amount remaining after any distributions on such Class A and Class M Certificates and (II) in no event will the Class B-1 Principal Distribution Amount with respect to any Distribution Date exceed the Class B-1 Certificate Principal Balance.