Reading spark plugs, looking for feedback.

It’s hard to tell with MMT on the plugs. One plug is getting oil. I’m going to assume it’s fat at idle with all the MMT on there.

What does the plug look like where the porcelain meets the shell?

Also you can skip the additives. At your compression ratio you just don’t need them. If the engine acts like it wants an octane booster there are better remedies than that.