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I was with crave last night.  I put in a molassi Variator kit with ^ grammies in it (maybe to lite for this beast). He has a nice clean bike, and has the 70cc Kit Naraku and Upjetted to 92. Stock air, no snorkel. He is what sounds like to me overheating and stalling temporarily , and bike is notably hot as f***. He has a Q-Tre tecnigas exhaust, bike has serious power... But its "soft siezing" as they say, is what hes described to me. I didnt get the pleasure to have it cut off for me, it just performed like a beast. On way home to him it happened, and got worst. started at like 49mph he said-----------  NOW i no we potentially heard an air leak near cylinder or exhaust manifold ...........and his Mixture screw is un cut un touched (untuned) . Smooth brass head still.. .... Bike to me sounds classic LEAN ...Running lean as a mofo.........   Anyone else?     A new bigger carb to regulate everything bigger for bigger carb would be Optimal for it

That was me riding out wit you the other night man. I can see how you'd mistaken me for Crave since we both recently just got our bikes though. Just wanted to add this update/novel  to ya post since I'm still stuck. Shut offs at high speeds & then usually bogs down more & more after every restart. Also doesn't have that hard punch it had after I left that night. I barely rode it since & tried a new BR8HS spark plug since a NGK BR9HS locally was hard to find & autolite brand sucked (original was slightly brown but had some composites it.almost rusty like). Thought the new NGK did it some good then it shut off after reaching 44ish 1st ride. We put a line in the mixture screw to adjust halfway like you suggested but it didn't do much. Just more smoke (oil though a good thing) & hangs so we put it back. It didn't sound good. The fact that it takes putting oil in the fuel to get it to start after shutting off a few times tells me oil is not being distributed as needed maybe. It's the only reason I made it home that night too. Took 3 cap fulls & starting & stopping to cool it down I'm assuming. You definitely came thru on the clutch wit variator install & suggestions. Just gotta figure out why it's running lean. I'll be bringing to a shop on Tuesday then another Wednesday if 1st shop can't figure it out. Looking to check for leaks, tuning & diagnostics. Btw my compression is 150-157.It was 175 when kit was first installed. The fact that it's done this with 2 different 70CC kits is pretty crazy too. Cast Iron Naruku it now shuts off whole riding hard and Aluminum Airsal it would bog down at high speeds but not completely shut off. Thinking of trying a Malossi at some point. Looking forward to trying those 9 gram weights to see if I get a little more speed once the heat issue is resolved.. If anyone is looking to get their bike 48mph with no 70CC kit Agoncalvesjr89 is your guy. Didn't know this was possible til I rode his.. If I can't resolve this issue I may go back to stock and have you do mine. Open to any suggestions.

The mixture screw only adjusts mix up to quarter throttle, but should put in larger slow jet and adjust as needed. Overheating at full throttle could indicate lean. Look for leaks first and then try larger main jet. You don't have to go to a bigger carb. Only reason to go to other carb is for more tuning options like being able to raise and lower the needle and you can have a manual choke to help cold start issues.

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What would you suggest for a larger slower Jet since its 92 now or did you mean the pilot Jet?  (I don't know the difference but can least communicate the info to a mechanic that does. I'm a month in) Would that be a reason for shut off or running lean?