Sorry I will clarify... Messing with the screw does make changes, I meant that if I play with the mixture screw and timing, and get the engine to where it will idle and drive (granted the changes cause the car to run differently,) the car stalls at stops. I have tried various settings with different timing and mixture screw positions as a test, and regardless of how it is set, the car will stall upon stopping.

I bought the car with the carb installed, although the engine wasn't hooked up. This past winter, the car ran decently, but I never got a chance to really drive it and let gremlins present themselves.

By the way, I think you helped out with my alternator questions. New alternator is installed and working great! Thanks