So I have a grounding issue. The setup: Squier P --> Peavey Tmax head -(line out)-> Crown xti 100 --> ampeg 1832he The facts: -The squier's insides were all solidered by myself. I did a good job in connecting it correctly and linking everything to string ground, BUT I have since put on a BAII, which I believe is electrically nonconductive. I also tried abrasing the bottom of the [black anodized] Badass to get a better electrical connection, to no avail. The body cavity is also completely unshielded. I am also open to the idea that I wired this incorrectly (although I used the Seymore Duncan instructions that came with my QPs). -So, if I'm touching the strings, there is massive hum. If I touch the pots, any part of my instrument cables, and either of the chassis of the amps, the hum disappears completely. This is not an issue when playing my relatively new EB0. Also, hum can be eliminated by rolling off the tone pot. -All devices involved are connected to the same power conditioner, so I don't think the hum is entirely local. Some stipulations: - The Tmax head (Which I am effectively using as a 60lb preamp) has 2 depression buttons near the line out: Ground lift and Pre/post EQ. If I do pre-eq, the buzz isn't evident but there is also almost no volume. If I do pre-eq, the volume is massive, but there is the hum (This is what I believe to be the "correct" volume level, based on the amp and cabinet's respective specs) -I've been thinking about the electrically isolating rackmount tabs. Good idea/bad idea/ no point with this application?