All Plugs Fouling on Right Bank

Your idle circuit is dead rich. That looks like fuel. What plug is that? I can see it's a Champion, just can't see the numbers.

You need 35* total timing PLUS whatever you have in the vacuum can. I don't know what you have for a distributor, so I have no idea how much advance you are pulling with the vacuum advance.

Just like a "power valve" in a Holley, which should have been called an economizer valve, the vacuum advance is there for economy. At a cruise, you can run more timing than you can under load. That is what the vacuum advance does. It's an economy thing. As a result, you need to make sure you have 35 total with the VA, all in by 2500 if it's an auto, 2k if it's a stick. You can reduce the amount of advance the can pulls. Seems to me if th can is pulling any more than 10* you need to cut it back some.