RE: First Saito
Hoot:
Sounds like your engine is doing fine.
Most Saitos don't oil the rocker gear at all well until they get really high time on them, the tappet fit in their guides is too tight for much oil to get by, and only a small amount passes through the valve guides
If you've not taken the covers off from new, and did the run-in on the plane, then while it was inverted running rich a great amount of oil could well have gone past the valve guides. With normal fuel mixtures a mich lesser amount will pass the guides.
Another case where there was a great accumulation of oil in the rocker boxes was cured by tightening the valve lash. If you set yours at 0.004" it will probably continue, setting the valves at 0.002" will decrease it, and give you better power also.
Back to the basic question. Don't worry about the appearance of the oil so long as you are using good fuel, and the oil getting into the rocker boxes wont hurt a thing. Not to worry about.
Bill.