Holley's science vs Edelbrock simplicity?

Ok. Got it. You adjusted the air/fuel mixture screws, not the air bleed.
That makes sense now.
Well in 1971 IIRC the TQs mixture screws weren't mixture screws at all. Or was it 72; I forget.

He carbs are plenty capable of 100 MPG but the engines are NOT!!!
Someday