About a month ago, I purchased a used Stc3A preamp for my Warwick SS2. I haven't installed anything yet, but just by looking it seems as if the previous owner messed things up a little. Here is the wiring diagram: http://www.seymourduncan.com/support/schematics/schematicspdf/3bandtc.pdf It seems as if the previous guy replaced the "concentric bass/treble" into two separate pots, so I now have five pots: volume/slap pull, bass, treble, mids, pickup pan. My bass only has four holes and I'm not going to drill another just to fit the extra pot. So, question #1: How do I get a "concentric bass/treble" pot? Does anyone know if SD will send out a new pot for free, even if it is a used piece of equipment? Question #2: My Warwick's original layout is: -stacked knob with volume, pan, and pull for passive mode -bass -mid -treble If I want to keep the above layout, can I use the SD pots? Or do I have to use the MEC pots? Will the quality of one differ from the other in any way? Question #3: Can I wire this for 18 volts?? How? Some of these questions were addressed here http://www.talkbass.com/forum/showthread.php?t=350949&highlight=stc but I just want to get some more feedback and include it all in one thread. thanks!