Ran the "low dollar 318" in the Duster today

T56MaxTorq said
Add more accelerator enrichment to try and remove the stumble when accelerating (move the lever one notch closer to the carb)

Already moved the lever for the accelerator pump.

Aaron65 said
Is the Edelbrock a 1405 or a 1406? Have you swapped to heavier step-up springs? If you're running more than 14-15" of idle vacuum, the pink spring usually works well.

1405, haven't bought the spring kit yet.