Okay, its time for my annual post griping about the buzz I get from my Dimarzio Ultra Jazz pups. The long and short of it is this - the pole pieces under the E and A strings aren't grounded. The ones under the D and G strings are. You put your thumb on a pole piece without touching the strings with your left hand and, boom, you've got buzz. My bass is shielded, grounded, etc., and is perfectly quiet when I don't have my thumb resting on a pole piece. How do you ground half an epoxy-filled pup after the fact?