I have a Hobbit motor on a test stand and it was running ok. Took the motor in my truck to a friends house to set the timing and upon return I could not get it running. It would only run on ether. I checked the carb bowl (removed the drain plug} and there was no gas. There is gas flowing out the gas line when it is disconnected so I know it is getting gas. Anyone have a suggestion what I must have done to screw it up.