Idling Issues - Holley Carburetor

^^^^ This. Can you tell if the secondary throttle plates are even close to seating closed or not. The stop screw takes a tiny screw driver and is very tough to set on the car unless the carb is on a 2" spacer.
I can pull the carb, adjust the screw, and re-install in about 5 minutes. And it let's me see exactly where the throttles are in relation to the t-slots. I have read that you can invert the stop screw so it is adjustable from the top. Or I may put in a hex set screw at some point to make it easier to adjust from the bottom with the carb on..