Turn the idle UP using the adjustment screw on the carb. 800 rpm in park/neutral.

Where are the idle mixture screws set? Most of the time if you leave them at 1 1/2 turns out, it's going to be rich.

Is fuel dripping in from the boosters?

The issue IS NOT anything related to the PCV or booster. Isolate the intake and solve the carb/timing issue and worry about the other stuff later.