I control the “pedal position” parameter of the “Whammy” effect of the hx stomp with the Morningstar MC8 expression pedal. The MC8 expression pedal is calibrated, it works well, but for some reason, even in the “0” position of the MC8 exp. pedal, the “Whammy” pedal position is 1%, it doesn’t go down to 0. what could be the reason for this?
Can you try setting your exp sensitivity to high, and calibrate your expression pedal in the MC8 and see if this still occurs? If you connect the MC8 via USB and check the MIDI Monitor, what are the range of CC values being sent?