As I begin to read, I feel I could have three problems with my idle:
1) Non-stock setup: maybe why the car stalled when I put on the air cleaner:
a) only the back carb has a seal ring for the air cleaner.
b) there seems to be some significant blow-by air coming from the valve cover, and some plumbing had been done which appeared to make the blow-by go outside the engine bay instead of back into the air cleaner. Perhaps the blow-by it more rich than the carbs could handle when the car last ran.
c) there is a red hose coming from the intake manifold which I assume is supposed to go to the bottom of the air cleaner. I believe that the purpose of the stock configuration of this is to possibly provide some air to the intake post-carbs. I am thinking that this hose is providing too much air, a vacuum leak, and an effective mixture that is too lean. That might explain why the car, even when warm, required the chokes be near totally closed. Perhaps there are other sources of false air.
d) reading about the venting valves and the fact that fuel vapor in the air cleaner can cause a bad hot start, have me the idea that I was changing the richness of the (sensitive in my case) air-fuel mixture pretty quickly. http://www.jaimekop.com/CarbManual/Page04-05/index.html
I now see that there should be a vent outside the air filter when the car is off, which essentially keeps the air in the air filter normal, not loaded with fuel vapor that can cause a bad hot start. This should not be a problem with my idle, but it did make me understand the significance of my non-stock hoses and missing air filter seal.
2) in reading the parts list, I realized that I did not understand or know how the idle speed is adjusted. I need to study this with my carbs. When I first discovered the choke issue, the idle was starting to increase and instead of adjusting, I just let it stall. http://www.jaimekop.com/CarbManual/Page03/index.html
3) idle adjustment, and how you do it. Here's where I am, and I can see that I'm going to need to synch these carbs: http://www.jaimekop.com/CarbManual/Page14-15/index.html
I will continue reading when I get a few more minutes to spare.