HX Stomp Knob 1 pot stuck? in Helix Posted September 28, 2022 Thanks for the replies...I will try one of the spray options to start with. I already tried Line 6 support and since it was purchased as a demo unit they won't help me. I will check to see if it might be bent which seems more likely to me based on the suddenness of the issue. Not sure how that might have happened though. Anyone know what type of potentiometer it is if I have to replace it?