So I just installed a set of Sad Blue Steels on my NYC JJ5 and now whenever I play any note on the B string I get this weird rattle sound coming from the pickups, like something is shaking. With the Sad Blue nickels I had everything was fine. I can't hear it through my amp but unplugged it's certainly noticeable. I have Sad singles in my bass if that makes a difference. Any help?