ok I have a 400ex that will not stay running. it runs for about 5 to 10 mins then starts to die out once it does die it wont start back up til it cools for a few mins when it dies I try to start it, it turns over fine but wont start but if I just barely I mean barely touch the gas it will turn over like the battery is about dead it looks to be getting spark so I don't think that's it I have put new wiesco piston rings 416 cylinder stage 2 hot cam stage 2 dyno jet kit uni filter in it since I got it not sure if it did it before all these parts cause when I got it, it had a blown head gasket. if anyone could help it would be greatly appreciated
