Fuel smoke and fouled plug

Update #2

New intake gaskets got me up to 14 lbs of vacuum. At my altitude that’s right where it should be.

The smoke is still there, but is now 100% burning oil. First start up there was a slight bit of smoke. Shut it down to take the vacuum gauge of and put the air cleaner on. Started it back up thinking I was going to take it for a drive and had much heavier blue smoke. #8 plug is pitch black, no more shiny to it.

Im almost certain it’s a bad valve seal, unless anyone can think of anything else?