I would try leaning down the idle circuit by turning in the idle fuel mixture screws a 1/2 turn leaner and then go drive it for a 1/2 hour+ and take another look at them to see if they look more to your liking or not
I don't like to see any oil, shiny, on the plug parts inside the combustion chamber, not good
Two or more ways for oil to get into the combustion chambers, bad rings and cylinder walls, bad valve seals and loose valve to guide clearances and or intake manifold gaskets leaking oil into the intake ports, all of them can be fixed
I would do a leak down(or compression test) test first, dry and wet. If good then I would remove the valve covers and look inside the valve springs at the valve seals to see how they appear to you
if those items look good then think about checking out the intake gasket sealing
Good luck, let us know what you find and do