I have a 235 c.i. with a rochester single barrel carb. The problem I'm having is that to keep the engine running I have to have the choke almost fully closed. I sprayed WD-40 around the base and insulator plate and did not get an increase in RPM so I guess I don't have a vacuum leak. I started with the needle valve turned out 1 1/2 turns.

Does anyone have any ideas to help me get this running correctly? I'm at wits end !!!