I recently got a used Schecter Damien FR from Guitar Center. I set up the Floyd rose and everything. (action is right, saddles are tight, nut seems fine). Im 99% sure its set up right. It holds pitch great, but when i wammy up or down it goes out of tune! The knife edges are a little bit worn but i dont think they are bad enough to be causing the problem, but I dont know. I lubed them and even filed them lightly. Im aware that it is a Floyd Rose special, not a Original so its not as good. But id expect it to at least stay in tune you know? Im considering just buying a new Floyd (special, cant afford a original right now). Any ideas about how i can fix this one? Any help is appreciated.