Excellent input. “Apply the LFO to the ribbon controller parameter.” Wow! Mind blown!
I’m hearing a wah-like component to a Univibe throb that is missing from Harmadillo.
So one thing I’ll try is to apply the LFO to the TONE parameter. Alternatively, I’ll also try notching out the X-OVERLAP parameter and applying the LFO to the X-OVER parameter (to sweep the notch across the frequency spectrum). This later approach seems similar to the difference between between a harmonic trem and a Univibe as described by Dan of That Pedal Show here: