I took my PM-20 in to get the wiring changed to two volumes and no tones or push pulls for splitting (I wanted it wired like a Les Paul without the tones). It came back to me with a bad ground or something that caused extreme noise. I took it back and they tried again......when I got it home it did the same thing. I decided that I would attempt to wire it myself and I came up with the same noise issue. The question is, does anyone have the original pm-20 wiring schematics? I have searched the web and come up empty. :confused-smiley-010