Holley Dp Carb Issues

Start it up and keep dialing in advance until the engine stop picking up RPM.

Dial some in, if idle picks up, readjust the idle, then dial in some more until it doesn't pick up.

You can set it with a vacuum gauge or do the max amount until it kicks back on the starter or doesn't run on when shut off.

I bet you won't see much difference between the annular and the proform. They both wet flow about the same is my guess.