Why are my distributor cap terminals burnt?

Moisture and aluminum terminals. I know Az you live in. Wash the engine in a year? Mopar a long time ago said to put dielectic on the rotor tip, thats right folks lube te tip
I am running a ballast, and I’ll check voltage once it’s back together.

@67Dart273 I just wasn’t sure the marks were normal, especially after so few miles.

One thing I did learn was that I don’t think the FBO plate will work with my distributor. Of course I learned this AFTER tearing it apart.

The pahsing is just about perfect looking at the arc on the terminals. Not getting into a pissing match on that one.

View attachment 1715853947

Those posts are too narrow for the slots of the plate, and they’re stationary, so they wouldn’t move in the slots of the plate even if it did fit.
You have the Malloty style and well sought after distributor. The hex screws can be loosened and then adjust the mechanical adnvance. The tabs are there for mechanical advance adjstment. Buy a set of keys. Hope it helps.
Hoppy