Poor idle

Ok I feel like this damn thing has me beat :( . Can't seem to find the issues. Things done:

-pertronix unit and coil
-fuel pump
-fuel filter
-new diaphragm on the distributor for vacuum advance
-timing
-valve lash while running

This is what gets me. The flap in the snorkel closes on idle but revving it to, say 2000rpm, doesn't seem to open it up. Tons of vacuum as seen in above photos and the vacuum choke pull off has tons of vacuum BUT the vacuum advance hole has almost no vacuum! Is my carb gasket flipped??

Also sprayed some carb clean around with no difference seen, except: spraying in the snorkel causes it to slow down, spraying in the strong vacuum ports causes it to speed up. Spraying in the vacuum advance port slows it down. Does that help with anything ? Sorry for the verbal diarrhoea , no one near me knows anything about these cars.

My oil light flickers, probably because my idle isn't high enough I think. And putting in gear lights it right up. Something isn't right somewhere.

Also, if I pull spark plug wires the engine does shutter and shake a bit