I can, alas, offer no help with your dilemma - but I can offer congratulations on your score, and thus will: Congratulations on your score!
I firmly believe that those P-series Yamahas are the finest power amps ever made; absolutely clean, uncolored power - what comes out is exactly what went in (except, of course, louder). And of all the amps I ever used as a soundman, the only brand that never crapped out on me mid-gig (or ever).
I predict that are going to be very happy with it. Right, Wolf?
Peter (who would not want anyone to think his evangelizing for the P-series Yammies in any way detracts from his respect for the newer PS-series.......)