I run a 48 pilot on the stock carbs but that was a 249 cc engine with 12.5 to 1 since you have 265cc you might want to go richer in the midrange. I don't have that much experience tuning the first gen engine.
If you have jetting up to 116 then get the rest up to 122. What plugs are you going with. I run cr9 e
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