Fan housing back together and much cleaner -- not spotless but waaaay better than before. Alternator & impeller as well. Decided to do the right thing and replace the push rod tube seals. While removing the left side valve cover bail I saw a drip of oil...and it was coming from...the #4 exhaust push rod tube seal, outside! Well, glad I decided to do this after all And since some of the cylinder nuts are exposed I'll check their torque.

Note: Drain engine oil, makes less of a mess when removing tubes. PO put too much oil in case so I had oil spilling out of the tubes