I'm also having the same programming problem with TF, MF, and PF, using an Ernie Ball VP Jr 25 pedal, also a very new pedal. The example that most comes to mind is using the pedal with PF to control the A-B harmony mix in Diatonic, while keeping FB at 0 in both positions (basically a modification of 1:1). But I'm finding that I can't get it to program with any of the pedals. Thanks…Joe