Random stalling, please help.

'71 Chrysler 300. Generally runs great, however I'm having common intermittent stalling.
No sputtering, the engine just stops.
This started happening after I changed the carb to an AVS2 with electric choke. Not sure if the electric load of the choke is enough to cause ignition issues? I wired the electric choke into the pigtail plug on my engine harness I got from Evans wiring a few years back, one female spade connector for the ballast resistor, another one unused previously.
When this...

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