I finally got my 200s timed right and ready to run it will start up and idle perfect throttle up and everything but it has to be full choked in order to run. If I try to take the choke off it will spit sputter and die the carb has been chem dipped and cleaned thoroughly so what can this be? does it need to be jetted different or what? Also I can ride it with the vhoke on but at about half throttle it falls flat on its face like it doesn't have any power. I really need to know what I can do to help the situation.