There should be a book out there, but there isnt, so help me out guys. I have a MIJ parts bass put together that I got from eBay. The sucker is really noisy though when the tone is cranked up. So I cracked it open tonight and realized the pickguard wasnt sheilded. Everything was properly grounded though, wire to the bridge and one to a brass plate under the pickup. So is it just the pickguard that needs to be shielded to get rid of the buzzing or do I need to shield the whole inner cavity. If I do have to do the inner cavity, whats better, copper foil or sheilding paint?