Hello have an 02 DS50 my 3 year old daughter rides, I am having problems with it like loading up or the choke is sticking I have takin the air filter off and the air intake tube and knocked the resticter out and it runs like crap and smokes badly. DOes anyone have an idea on what I might attempt next. it seems to do good with out the air intake tube and the carb. Please advise as I am not to familier with this setup. thanks