Ok so this morning one of my buddies wanted me to start it up so he could hear it, i have the HMF slip on and the HMF optimizer, but it start up and ran just fine and then this afternoon we got back from work and i unloaded it so he could give it a test drive well i got on it to start it and all it would do is crank and nothing else. its gettin both spark and fuel! so what could it be? Any thoughts would be greatly appreciated