I just bought a new black pickguard to replace the white on on my black HB PB-20. All the control/jack holes are too big. I *could* just put a washer on each side and crank down on the nuts that hold the pots in place, but the bodys are zinc or alum., and I'm concerned about stripping them out. My latest idea is to find a piece of wire as close to the proper size to fill the gap, and make a ring (might have to use some glue). Still might have to use a washer on each side, but there's not as much need to tighten the nuts down so the controls don't shift Any other ideas?