Thermoquad idle issue

AJ, here are some answers:
Post #11, By passed OSAC-no change
Post #13, slight up and down movement during rough idle. Held it up and idle increased slightly.
Secondary butterfly fully closed
PCV system operating as required
No vacuum at oil dipstick tube with both valve cover inlets plugged, slight pressure observed
Cannot pinch fuel line between pump and carb due to steel line being used
Noticed no vacuum where dashpot is plugged into carb. Dashpot inoperative.