3 months later and the carbs are sonic cleaned and now it is firing on both cylinders at idle. i replaced the reeds with Boyeson and may have some jetting to play with. and one cylinder has more exhaust pressure than the other but i am ecstatic the bottom end is not the culprit. will play with carb synchronization and freshen up the top end this winter but in the mean time hope to put in some miles now that cool fall weather approaches.

thanks guys.

and fontyyy, i now understand the center crank seal.
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MC21R9N track
MC18R2J track
CBR954
CR250