I aquired a Roland EV-5 expression pedal recently and have been testing it on my Timefactor and Pitchfactor. Every time I use the pedal it sweeps discreet amounts at the heel and toe positions and then changes the sweep rate drastically in the middle. I feel like an idiot for having to ask but is there a way to make the sweep uniform rather than weighted at the two ends?
Unfortunately the sweep you mentioned is a characteristic of the Roland's potentiaometer and there is no way for the Factor pedal to change that. The Ernie Ball VP JR. pedal is a better choice since its sweep is more uniform.