Pedalino like some of the more sophisticated effects and controllers incorporate a calibration utility that can mitigate some of the issues with pot rotation. There is a software option that allows the user to match the device to a specific expression pedal. This involves moving the pedal between it’s maximum and minimum settings and the device measuring the result. It then sets it’s internal parameters so that it recognizes where the maximum and minimum settings are of that particular pedal. This can often resolve problems of limited range. It’s important to calibrate all expression pedals. If the pedal is ever replaced, even with the same model, calibration should be run again.