massive reconfiguration time again.

I'm not so sure. It's not a 3310 (aka boat anchor) and it's a mechanical secondary carb. If the butterflies are open and the air valve doesn't, or it's partially opening, it's may be struggling for air, and air moving through the booster it what make the fuel flow. And the emulsion, and the main air bleed.

So I'm not sure it will increase the bog.
That was my theory that it would get air directly over the Ventura openings and siphon gas quicker??.. I'm going to try and put those holes exactly where they are in the picture and I would bet dollars to Donuts that they are directly over the center of the venturas...