When I deactivate my oscillators, turn the resonance to self oscillation and turn on the VCF key tracking (Patch Edit parameter 26) the result is a slightly out of tune sine wave. 

When I step through the values on the filter I step right over the value that I'd need to tune the Cutoff to the correct pitch for the keys I'm playing. 

Is there either:

1.) A more fine tune control for the Cutoff of the VCF so I can tune it to the notes on my keyboard

2.) A manual calibration that can be done on the filter's global frequency so that it falls onto the keyboard's notes when self oscillating and key tracking

3.) Any other solution to this problem Perhaps using a Matrix routing or some other setting I might be overlooking