Update:
Pulled the carburetor off.
FAILED TO PREVIOUSLY MENTION THAT PCV VACUUM WAS WEAK.
This is relevant, because, I am not seeing any provision to feed the PCV port vacuum. There is no corresponding hole in the manifold, so, the gasket (which had a hole) was sealing to a flat surface.
Would that create excessive vacuum in the carburetor and force it to draw fuel from any/everwhere?
@RustyRatRod