I have the aforementioned Chibson Flying V. I have stripped it and am replacing all the parts with better stuff. My question is about tailpiece and bridge bushings. They used tailpiece bushings for both the tailpiece and bridge (with the little hat up on top of the bushing) and they are not steel according to my parts magnet. Should the replacements I buy be steel? Does this affect signal transmission? Also, will replacements I buy just be generic pot metal like the ones I have now? Or are replacements, like say from Guitar Fetish, better quality metal/steel?