You can set the ctl3/4 or exp2 under the "assign" section.
Yes, but here's the problem:
Right now I have EXP2 set to "FX-2:Sub-wah" and "FX-2

n/off" (for 'switchless' operation) thru the assigns section.
EXP1 is set to "Delay:Feedback" and "Delay

n/off" thru another 2.
In manual mode I have switch 1 set to PDL

n/off. I currently have EXP1 set to pedal bend which is set for 1 octave up on both min and max.
What I'd love to do is set the EXP2 to the PDL:WAH function assign the PDL

n/off to EXP2 as well, thereby clearing up FX-2 for the octave up effect that can do 2 pitches.
Unfortunately I can get the wah effect on EXP2, but only by assigning it as a default for all patches to EXP2, or assigning it to EXP1 within the patch.
The problem with the first is that if I want to use EXP2 for something other than a wah in any other patches I cannot re-assign it from "wah" in that patch, or I would have to avoid using the PDL effects modual.
The problem with the 2nd is that when I use EXP1 for delay/loop jammin' I cannot use the wah, since moving EXP1 do peel off the old delays a little would change the wah position as well, preventing me from setting it in a solid position to get a midboost parked wah sound.
Quick EDIT: Oh, and I've found that I HAVE to assign the wah to EXP1 thru the ctl1/2/expsw/exp1 screen. If I just use the 8 assign section to set the wah to exp2, the effect isn't applied even if its "on".