hi, newbie here. i just got a se custom from a pawn shop for $150. it was scratched to holy hell on the back, so i got a deal. i sanded most of them out, and am going to refinish it. while i have it apart, does anyone know a good whammy replacement? i never had a guitar with one before. if anyone knows, or has done this, i'd really appreciate your advice. i don't know if i can put a khaler, or whatever brand. thanks. scott