Harms Rebuilt '71 Thermoquad - Wondering Idle, Stalls when Put in Gear

I agree, except the ONE thing I touched on. There's NO WAY you can get the metering rod tower adjusted right on the money without being on a running engine. You can get it close, but not spot on.
I'm not even close to being "spot on" or "on the money." I would graciously settle for the car not stalling when I put it in gear. I have another '71 Challenger with the same carb and mostly stock. I'm going to swap carbs this weekend and see what happens. At least I should be able to confirm or eliminate the carb as being the problem.