I purchased a Everlast TIG welder POWERTIG 250EX about two years ago. I have been very happy with it so far except for the foot petal. It is far to sensitive. The unit came with a FT-22-CL. I measured the resistance across pins 3 and 5 of the connector and read approximately 20 kohms. Would it be possible to take the foot petal apart and replace the potentiometer with 50 kohm linear potentiometer of the same type. Would there be any other advantages to order a new EV-PowerPedal-50DL.