Umm, I bought these pots because the base was smaller than a CTS and I was replacing the cheap mini pots in an Aerodyne Fender. How do you use them in a wiring setup? The casing is a conductive polymer...can you solder to them or what? I've never used them but they are touted as "very nice" pots for guitars. If I can't solder to the back of them, how do I do all the jumpers on say a P/J passive wiring setup like on my Aerodyne? Has anyone ever used these Bourns pots in a passive wiring setup and how did you do it? Can you solder to the backs of these?