1989 TRX 350d. It has a newly rebuilt head and cam chain on it. Compression is good. Valves adjusted to service manual specs, Starts very good but runs rough, smokes like the choke is on (It's not) and will not idle no matter what. Idle adjust does nothing. The carb has been gone through and cleaned and set to factory specs. If I try to move it it's like its flooding out. Any suggestions?