Hey guys, I just got done installing the thumper racing 570 kit. The carb went to sredrum and made into a 43mm. My problem now is that when trying to fire this beast the first rotation makes a good spark at the plug but every other stroke is very weak at best. The plug is new, so I thought it was due to a underpowered stock battery so I bought the CV4 lithium with 240cca and it still did not cure my issue. When cranking it will pop like a shotgun like every 4 seconds. I don't think it is a timing issue cuz I did happen to get it started once and it ran great sounded good. The valves are adjusted correctly too. I'm drawing a blank here, any insight would be greatly appreciated.