1966 Plymouth Valiant /6 & Holley 1945 carb can only get to idle at 1250rpm. How to get a lower idle without dying?

Nevermind… ahaha!

After driving it for 15 mins, letting it sit for an hour while I was doing something, it now refuses to start. Even with starter fluid, which makes me think it’s ignition related?
At first it would idle like **** at ~1250, and closing the choke helped it idle. But now it refuses to start. Attached are the pics of the 1920 and 1945. The exhaust butterfly valve is moving freely, so doubt it’s that. With the choke completely open and at full throttle just now, it couldn’t get above 3000rpm. Gonna try the fubar carb and see what happens.

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