I took apart the stock electronics in my SX and started to work on modding it with Dimarzio UJs and V/B/T with a mini-toggle for Ser/Par. I soldered it all up, and did a pretty neat-looking job. Here the things I noticed during my test run: -Terrible humming unless I touch strings/bridge/controls. Am I right in thinking this is a grounding problem? I wired all of the ground wires to the output socket ground. Do I have to run a wire from the output socket ground to a screw in the side of the cavity? -In parallel mode: Only the bridge pickup works no matter how I turn the blend knob. Sound great, but I want my neck pickup! What might be wrong here? Still have humming, BTW. -In Series mode: The two pickups work perfectly as one, but I still have the terrible humming. Any suggestions?