So I let my buddy rip around the other night. He’s new to a 2stroke and I told him not to hold wide open. It sounded like he was really ripping Hard. He broke down so I went to get him. Kickstart was frozen and still is. He said he shifted into 3rd and that was it. It stalled out. I haven’t tore it apart yet but I’m thinking he smoked the top end. Any other suggestions on what it could be. Also if it is top end is it worth the extra 100 bucks for the wiesco 68mm vs the 66. I think it’s bored out now and I happy with the ride. Is still has original carb I think but does have FMF pipe and silencer. I was just going to buy the whole kit with cylinder head and everything.