I know that epoxy potting pickups reduces or eliminates microphonics but why doesn't every bass have them? Are there other advantages or disadvantages to using (or not using) them? My pickups' manufacturer wants to know if I want them potted or not. I want my luthier to make his own wooden covers for them so I'd either have to have a cover made to fit around my plastic covered potted pups or else leave them "un potted". What to do?