Hey Joker..I have a question, since you are the gas gauge guru..I just put a new ground wire on the sending unit to the cab, and cleaned up the wire from the sending unit to the gauge..When I turn the key on, the needle on the gauge will go up to about 1/4, same as before..So, I wacked the tank a couple times, and the gauge bounced all over the place..Question..Do you believe my sending unit is history? Those clutch heads don't come off real easy on that sending unit..Thanks, Steve