I am making this post to report some previous maintenance done on the tufting guns, so the information is alongside everything else in the “Issues and Requests” category.
Gun A had a burnt out power supply, so the cord from Gun B was used to correct it.
Contained [in Tufting Kit B] is the cord from the bad power supply and the power connector.
The speed switch on [Tufting Gun B] also seems to be stuck on high at the moment
A power supply replacement is still needed to be purchased for Tufting Gun B.