383' shuts off' issues, I tried praying, no luck

ADDITIONALLY- The choke does seem to work as needed, I have continually tweaked it, and looking back it does seem to be a bit worse since I rebuilt the carb, but again it got colder out. Although I know what I’m doing rebuilding a carb, it is spotless inside now, there I always worry about cheap generic rebuild kits which this was. (tomco). I really only bought it to get the accelerator pump, which as you can imagine after sitting 30 years was totally dried up on mine. The car bowl was filled to top and float worked and not sunk. I do have some concerns about the ‘different’ design on the carb mounting gasket changing the vacuum draw, but with it sometimes running for 10 minutes or 10 seconds I kinda ruled that out as a problem also. . .