This function is in the latest PitchFactor beta release, no? If you go into system settings and then to Utility, there's a property called PDLCAL which stands for pedal calibration, which you can turn on or off. What you're going to want to do is turn it on, move your expression pedal from heel to toe until your happy with the calibration, and then turn it off to lock out further changes. If you're using the PitchFactor with H9 Control, you should also see and be able to set that property from H9 Control by going to the Pedal Settings screen and going into General Settings.
