im not familiar with the carb u got so i dont wanna give u the wrong advice. ur problem could be many things man. maybe ure too lean. sound like u are. get some bigger jets and work ur way down from what i was told on my carb prob one time. then start do them plug chops. u'll need a few plugs. although i STILL dont understand plug chops i only do a visual check of the plug after a hard run. or, it could be a dirty ass carb. u should always clean out ur carb when u have it off anyway, and check ur reeds but put a finger inside the intake and feel for any missing sh*t or loose things dont force ur finger around bc u might break the reeds. thats all the advice i have man hope it helps