thanks runX. I'll try that.
I want to take it off because the carb barrel twists at will and one time it got stuck wide open, fortunately it ran out of gas almost immediately.
I know there is a wedge or 'canal' on the barrel and that it also has sort of an elongated "hole on another side of the barrel.
Don't know how to fix this but I do know it shouldn't be wiggling around. I checked the nut that holds the piece that connects it to the servo mechanism and it is not lose, so it is something inside that is not holding the barrel in place.
Any ideas/suggestions are welcome.