Well, good luck. Keep us posted. You're getting a lot of good advice, (better than I can offer), I can add, however; Mine runs very well with the original type carburetor and choke. But, not before; it is well warmed up. I would; exhaust every effort, on the original type carburetor, and choke. A different type Carburetor (IMHO) would, introduce; more gremlins to chase away.