My son's trying to get a 2003 Prairie 360 running. Over a year ago, he'd rebuilt the carburetor using a SHINDY 03-112 rebuild kit from JT Cycle & ATV, and it was working fine; however, when it wouldn't run recently, he took the carb apart and the jet needle was rusted in place. He cleaned that up as good as possible and replaced the jet needle with the old one that wasn't rusty. Now, he can only get it to start about 1 out of 5 tries, and when it does start, it won't run unless the choke's on. The spark plug's good and is sparking. It has compression.
Any ideas on what he should try next or look into?