I have one of the newer Rockbass Streamer LX 5 string basses by Warwick and I'm looking to change the stock passive MEC passive Dynamic Correction J style pickups. They're putting out some bad hum; almost if they are microphonic. Bridge and neck pickup seem to be the same size. I tried the EMG J bridge size pickup and they don't fit. Seems like the pickup "ears" are too close together. Any suggestions on what might fit? I've been trying to find a set of active MEC J pickups but no luck on this board. Thanks!!