Oh good, a wah discussion. Here's a chance to post my first stupid question:
I set up my expression pedal and confirmed that it was working properly by checking the numerical readout (1-~16000) on the KPA. Then I set the pedal up to control the wah-wah. Curiously, it seemed to be working (the filter was changing), but as I went from heel to toe the volume would cut out, as if the pedal were also set up as an inverse volume, or crossfade pedal. I couldn't find any setting in the KPA to explain the behavior, so I couldn't correct it. Does anyone have any clue as to what I've got wrong? Probably a default setting I need to disable?
try s to set up the heel and toe position in the opposite way in my midi was the same problem. Try to change the value for the lowest and highest point. Maybe that change the problem it helped me.