Deciding to Frankenstein the build (why not, most of mine are anyway hah), I socketed the 3 spots for the caps and used some 2.2u WIMAs. It produces a frequency range closer to what I was looking for. I read that adding a 50k resistor between the board and leg 3 of the pot gives a “half-speed” mod, but haven’t tried it yet.
Still not happy with the speed pot though. It has a tiny usable range (with either set of caps). Changing the pot didn’t make a huge difference. What values could be changed to “broaden it’s horizons”? Maybe R14 and/or R15?
Thanks again