Regurgitating an old thread since this is the only result that shows up in search results for M-Audio....
I've tried all of the suggestions here (except for actually modding the pedal) and cannot get the M-Audio EX P to work as a wah on my Helix LT.
Well, I did getting working initially, but as soon as I changed patches it quit. I have discovered that sweeping the pedal does nothing, but sweeping the little volume button on the side of the pedal actually makes the wah work correctly. This, however, is not practical. :)
Does anyone have any ideas/suggestions on how to make this pedal function correctly and consistently with the LT? I see lots of folks who say it works flawlessly, but that is definitely not my EX Perience.
TIA,
Shawn