vacuum gauge to solve idle issue

Thanks for the help and replies guys.

AJ in the videos the vac adv is hooked up to the timed port on pass side. I took the 1st video with engine cold.
Surges more at idle compared to driving. But it still happens in both scenarios. In both cases, when I give it more fuel it seems to stop temporarily.
I just finished cleaning carb and checking float level and drop. They were both close to factory specs. 7/16 float level and 1 1/8 float drop.
I hooked choke up to 6V lantern battery and it didn't appear to do anything? Would it need 12 to even move slightly?
I will reinstall carb and report back.

Thanks all. Keep the suggestions coming.