distributer cap mods?

Don't drink the cool-aid Don is serving you. If your going to run vacuum advance,it should be hooked up to the "Ported" side of the carb. No Chrysler ever came from the factory with its vacuum advance hooked up to full manifold. An original Carter only had one port on them.You guessed it,Ported.The ported side on your Ede,is the passenger side port.
For tunning purposes,take the vacuum advance out of the equation,plug it.

Use the "Orange" spring. It's what the carb came with from Ede. It works.

Why are you running 92 & 92 for jets ?
Just curious how you came to this conclusion ?
That carb came with 100 & 95 jets from the factory.

Your over thinking the cap.

Give the Champions to your gardener for his lawn mower. (No disrespect)
Get yourself a nice set of NGK'S ,or Autolites,in that order.

Steady vacuum is good. Hopefully you have all vacuum leaks solved,otherwise your chasing your tail.

Hopefully your Crane electronics are compatible,and have been wired correctly.