EMG ACB-4/6 Banjo

This item appears to be precisely what I require - a magnetic pickup WITH volume control. I currently go into a pedal board for acoustic instruments, and while my Schatten Dseign works well - feedback is always close at hand.

The first one of these came busted, and was unusable. The second one I installed and it worked perfectly for 2 days. The sound was what you'd expect from a magnetic pickiup on a banjo - a compromise, but an acceptable one. But it too busted (sponge or somethng expanded and disfigured the pickup) making it unusable after two days. The third one I installed but it produced no sound. It seems there was a loose wire (I'm not sure why they would expose so many little wires), or a bad connector, for when I jiggled the wire/connector, the pickup would work momentarily.

There isn't much else on the market for what I require. It's a fairly easy install and is quite neat. I'm contemplating buing a fourth. If that doesn't work....