Ok, I've been reading through old threads for the last hour and found one mention from a guy who was having the same problem as I am having, but there was no fix for it. truck is an 86 gmc k1500 and when I turn the stick to kick on the wipers they work fine. When I return the knob to the off position, the wipers keep going. In order for me to get them to stop, I have to turn the knob back past the stop position (what I would call the momentary position). What say you Squarebody Guru's?