I spoke to carbking who advised this for my fresh engine:
Adjust the mixture to 1-1/4 to 1-1/2 out instead of max vacuum.
Fuel entering the Venturi at idle is not unexpected.
Hunting for stable rpm at idle is more than likely since the engine is tight - set speed 100-150 rpm above normal and drive.
After break-in the idle speed can likely be reduced to normal and the hunting for a stable speed may no longer occur.
Thanks Jon, Jerry, Otto and all of the others who have helped.
I’m off my high carb diet for now!
