Here's a patch that sort of kludges it, by using Osc 2, scaled by the pitch wheel, to it's-self scale the resonant part of the waveform.
Originally I planned on using a squarewave to isolate and switch out the rez portion, but that created a lot of overtones as it was applied (due to creation of sharp transients), but I found that by lowering the PD amount on the switching oscillator, and fiddling with it's phase, I could slide the switch wave right into place. You can't do THAT on an old analog with freerunning, drifting oscillators
Included is the patch in case anyone's interested. Notice that while this IS scaling the resonance quite effectively, it doesn't sound quite like a normal resonant filter, but rather something entirely different. Mostly because our starting point is a wave with resonance applied to it every other cycle, and it's THAT which is being messed with.
