crf help asap

[aaron496]

I just put together a 03 crf450 hybrid, Got it running, but its not running well, idels ok when you try to move it stalls, then it takes like 20 kicks to get it going again, I'm gonna take the carb off mow and clean it, does anyone know where to start with jetting. Im pretty sure its a stock head. It has aftermarket head pipe and a shorty muffler, no airbox and a r intake

Thanks Aaron

[protrax]

The intake valves are tight check the tolerance and re shim to spec ... should be fine