I am having a volume pedal issue. I just got the unit and I've tried EVERYTHING but no matter what I do the volume pedal only goes from 97% to 100%. I've changed the range, restored to factory, done preset restore, everything. I've put it on position, turned it on and off. I cannot get the volume pedal working. I'm wondering if my unit might be faulty. There are no vids I can find on just adjusting the volume pedal. ANYBODY? IDEAS? THANKS IN ADVANCE.