Thanks for all the replies, all good info.
I'm going to go about this one thing at a time.
I changed the
oil back to no
synthetic 20-50 Castrol and no change in the
oil consumption or wispy smoke,
oil smell.
Next on the list is to replace the intake gaskets. Considering that the two middle plugs on the passenger side are the only ones showing oil burning, it would seem the intake gasket may be leaking in that area and letting both cylinders suck oil at the same leaking spot. Seems reasonable to me, so I'm going there next.
If not that, then on to the valve stem seals, but really would be strange to have two of them right together go bad at exactly the same time.
Thanks again, lots of help on this board.