Hi, I have a nash pb63 ( a 60s style p bass..) which i have strung with rotosound rounds. Plays fine, sounds great. I recently switched to black beauties, coated strings) and now there is some sort of grounding issue. The pole pieces are very sensitive and begin to hiss when touched, enough to make recording and live playing a no go. Is there a way i can use the black beauties and fix the issue myself?