Hi. I just purchased a used POD XT Live. The pedal wouldn't return to zero for the wah or volume. I found instructions on calibrating it, went through the process, and all was well. Once I rock the pedal three or four times, it goes back to returning to between 14 and 20 with the heel all the way back. Repeated the process several times, same thing every time. I took off the bottom cover, cleaned some dust off the board, made no difference.
Any ideas?