Well, I finished installing a new Bassline Precision pickup but have found a problem: it's not working! I've looked it over and everything looks to be in order, and checked it against the little schematic that SD included with the pickup. Does anyone have any idea what might be the problem? I plug in and get a steady hum, and the sound cuts out for a split second whenever I pluck a note. I have done some work like this before and didn't think there would be any problem so I'm not sure what went wrong. I used 2 250K pots, a stereo jack, wiring from an old EMG harness, and the capacitor from the EMG harness. Any ideas based on the information provided?