I just finished wiring up a parts P-bass following the Fender diagram. http://www.fender.com/support/diagrams/pdfs/APBASS/SD0193200APg2.pdf The tone pot was apparently used as a volume pot before and had one of the contacts grounded to the pot. I didn't catch that at first, until I noticed both pots functioned as volume. I un-soldered the contact and everything works as it should. But I get a buzz with the tone pot wide open. Not terrible, but noticeable and it's dead quiet with the tone pot off. Could I still have something askew? Or do Precisions buzz a bit when dimed? If you look at the diagram the only difference is that my cap is soldered to the same spot as the ground wires, but I can't see why that would matter.