So, I have a BEF Pro and a Pitchfactor (upgrading to an H9 eventually) and I've been using the Mission/Pigtronix dual expression pedal (20k ohms) to control both. It seems to work fine for the BEF but the range is definitely a little off with the Pitchfactor. It's functional but the 0-100 sweep is definitely not smooth or uniform - it almost immediately jumps to around 60 and nearly the whole sweep of the treadle is spent from 60-100, mostly in 80-100. I tried the SA Dual expression pedal (50k ohms) but it doesn't work at all with the Pitchfactor. I've also tried the EB VP Jr. 25k but that doesn't work at all with the BEF. Frustrating. I saw on the Mission site that they now have a dual 25k ohm expression pedal designed just for Eventide boxes - I assume I'll get the same bad result with the BEF as when I tried it with the VP Jr. 25k, but is there any reason why it might work that I'm missing? I'd really prefer not to have two different expression pedals, so maybe someone here can provide some insight. Thanks.