When I first plugged in the G1xFour I tried out the Waa Pedal and it seemed usable. After an hour long Waa Solo, I went to stomp it off and noticed it said "press up or down" to finish calibration. It must have recorded my playing as the calibration cause now 80% of the effect is in between 70 and 75 on the pedal. Does anyone know how to re-calibrate the expression pedal? I have a better stand alone Waa pedal but for band practice its nice to have just fx pedal with one power cable, one amp and one guitar THANKS