Couple of potentiometer suggestions:
-
For the VR2 scale trimmer, the target resistance for the combination of 24k and pot is ~30k, so you may want to use a 10k there to put the target closer to the center of the pot. Also, the symbol is a bit strange, but I guess that’s a Kicad thing.
-
For the VR1 tuning pot, connecting it in series with the summing resistor results in a non-linear and somewhat limited tuning range. A more “correct” approach would be to connect it as a voltage divider, like it’s done in the performance VCO. See here for a discussion of some alternatives used in LMNC designs.
Another tip is to make sure the timing capacitor C2 footprint is large enough that you can fit a quality film capacitor there, and not just tiny ceramic (see here).