[randy500]

I'll add one more thing....

The idle screw could be opening the primary butterfly's too far allowing a vacuum to be created across the venturi, which causes it to drip....the idle screw should only be set 1/2 to 3/4 of a turn in. If its further than that a vacuum is created across the venturi at idle which will cause fuel to drip. The uncontrolled delivery of fuel will cause erratic idle, flooding and stalling.
Bent linkage can hold the primary and or secondary butterfly's open. Check the linkage and make sure the secondary is not dripping fuel. (I couldn't tell if it was in the video)

Often the primary idle screw is too far in because the timing is not advanced enough, sometimes the timing is off from mismatched timing tabs and balancers, there are basically 2 sets of tabs and balancer markings, a mismatched set can cause retarded timing which is incorrectly compensated for with the idle screw.