well, i havnt messed with the carb yet, but i went out and started it up and messed with all the electrical connections and wires on it and couldnt make it quit. The ONLY thing i found was the key switch was loose in the dash and i tightened it up. I ran it for an hour and it never quit or even stumbled, could the loose key switch cause the quitting or is it not need to be grounded to the body?