Normally I would go with what I know and not ask, but this is not my specialty!!! I got good fire and sparkplug. Only thing different is an HMF pipe and a lean condition. I was riding around at night and been doing everything possible with my foreman, when while just idling along it started to sputter and then died. I tried to restart it and it wouldn't start. I waited about 5minutes and tried again and it finally startedand ran fine at a more open throttle. when we rode about 5-10 mins and it started sputtering again and died. I started it again but revved it up alot thinking maybe it was getting loaded up with something. But it died again and didnt start and I was towed back to camp. I checked sparkplug which is when I noticed it was alittle lean and spark and it was good so that leaves a fuel issue. Any ideas?