Thanks for the info Ripthorn, just wondering about the significance of the extra row of lugs... is this then in effect the same as having two regular pots? (controlled with one knob though)
In my impatience, I've already gone ahead and done a mod with a regular pot, though I might revise it in the future. I've noticed that there is "bleed" from my magnetic pickup line in my piezo pickup line (ie. even when the knob is turned 100% piezo, 0% magnetic pickups). Is it difficult to get total isolation of signals? (you mentioned that it would also happen with the tone circuit?)
Also, one simpler question I had was: is a linear taper best for blending.... or should one still go for audio taper?