Here's a closeup of my plug. I did a Wide Open Throttle run in an industrial area right near home, probably not long enough to truly test that fuel circuit but still here's what the plug looks like
And finally, that rubber interface between the carbs and the intake manifuld does get pretty hot, not sure how I feel about the fuel line draping across like that. There's a mechanic's joke from the North Woods about assessing something ambiguous yet critical like this, you're supposed to shrug and then say: "It's probably OK". But you're laughing because you know that's the same thing muttered by regretful space shuttle engineers, aircraft ground crew men, and any number of botched shade tree mechanics out there.
Here's a picture of the cylinder when I was doing the engine rebuild. I don't see how oil could be weeping out the left side of where the head makes contact...most likely oil coming from somewhere else...but where...