Got a BKP in the bridge that's silent as the grave, regardless of whether or not i have my hands on any metal parts - it's just perfectly still when i'm not playing. It has also been installed by a professional tech (had to route my DC727 to get it to fit so i sent it over). My Dimarzio PAF, however, is not. Not even in humbucker mode. It's not bad, don't get me wrong - but i have to touch metal for it to shut up. Any way to test the grounding, or just re-ground it properly? I'm pretty sure there's no shielding in the bridge cavity, but the control cavity is shielded. Thanks!