I recently purchased a Fender Deluxe Active Jazz Bass (Mexican Made). It came with noiseless pickups. I just discovered a buzz when switching completely to the bridge pickup. This particular model allows you to pan and blend the two pickups together. When I switch to the neck pickup, the buzz goes away. Also, when I touch the strings or the bridge, the noise goes away as well. The noise is most exaggerated when the treble pot is turned up. If I turn the treble down and the bass up, I can at least minimize it. I took the bridge off and back on making sure the ground wire was connected. That did not help. From what I have read in other forums, it appears to be a shielding issue or a grounding issue. Does this sound right? It is especially frustrating since I purchased this particular model for the noiseless pickups. Can someone shed some light on this issue? Thanks in advance.