UPDATE: After demagnatizing my MPP, and replacing the gps/compass #1 board(which I actually think I screwed up taking the top cover off). I reset to factory settings, rolled back the firmware then upgraded to latest, calibrated and the ol girl is ready to go flying again. I crashed 8200 feet away, 350' or more in the air, after losing connection while over a lake...and I probably have $50 in repair parts to get it going again. That isn't counting the one prop I cracked, because I had extras. But to be able to actually find it, and repair it for $50, I think that was very very lucky. Anyway, thanks to all of you who have helped me out and given me advice on what to look at and look for, I am very grateful.