Done, and it seems to have responded.
To check both, I have a simple preset with vol and wah as blocks 1 and 2 going to amp (block 3).
Volume pedal functions properly as [EXP2]
But,
Wah does not respond to expression pedal, no matter what I bypass, isolate or select.
I can hear the wah when selected, but only as a filter...moving the expression pedal does not change the sound or change to display XP1.
Expression pedal stays as [EXP1 EXP2], and only changes when vol is used. Then is changes to [0-100% EXP2]
The on-boot has simplified things (i think).
How can I assign wah to EXP1?
Many thanks for your help.