I am curious whether you are working the throttle when you are trying to start it. With alcohol you can flood the engine if you crack the throttle too much. You must realize the barrel valve is constanly putting fuel to all 8 nozzels at the same time even if the throttle is closed. So if you crack the throttle you are also opening the barrel valve and putting more fuel to the nozzels. I would think with the air/fuel ratio being more on gas than alcohol the problem could be much worse. I would think once the pump has filled the barrel valve and lines you shouldnt even have to crack the throttle, just hit the starter and it should fire right up at an idle just like a carb. Just my opinion!