<VV> Oil spritzing onto top cover - symptom of ... ?

[Charles Lee]

My 67 110 PG Monza is running after too many years.  Runni9ng rich - lots of HC's from the tailpipe (jets ?), but that comes next.

Right now, oil is spritzing onto top cover like tiny raindrops - too fine to tell but apparently oil - I can't feel or see the source.

Is this a symptom of the crankcase top cover / PCV / oil switch leaking, blowing out through the fan ?  (oil switch doesn't appear wet) 

I'll be re-sealing top and bottom soon enough, but want to make sure there isn't something else I haven't considered yet that may need sealing too ?

So far, oil cooler, PCV and pushrod O-rings, valve covers, oil pan, top cover, etc (full set from Underground) to be done soon,

Haven't done this in a while, need a little refresher course 

Thanks in advance !
Charlie