ok, im a fairly new rider so it may be a rider error but...when shifting from 2nd gear up, it seems to be a bit jerky. is it possible to let out on the clutch to fast when shifting from 2nd gear up? also, my engine seems to be a little boggy(not too bad) when i give it more than about half throttle. could it be a fual/air ratio issue? possibly a venting problem? maybe adjust a screw somewhere? i cleaned the carb and it looks very good inside. i have no idea what could be causing that. sorry if this is redundant but i searched google with no luck. any insight would be extremely appreciated!