Improving acceleration using 2bbl Carburetor?

popped the distributor cap off and it was essentially black all around inside. He scraped and cleaned off the points and then I was able to crank it and it ran fine for a few minutes before having issues again. ... That black stuff is what I’m referring to as “gunked”
That's worth peeking at again.
Should be clean in there.
Cap with oil inside is odd but maybe @halifaxhops has some ideas.
If it was carbon, that's an awful lot of carbon tracking.
Either way these become easier paths for electricity than having to jump an .035 gap in a high pressure chamber!