So if I don't (but actually don't know yet) have worn rings or valve guides, and the engine oil isn't topped off too high, what's the amount of oil lying in the bottom of an R80 air filter housing that might signify a problem? What's the "about" normal amount for these R80 and R100 engines? My ST has a messy 1/16th to an 8th thick smear of it, pooled at one end. It doesn't drip out of the plastic air intakes. (yet?) or appear to even make it's way into those intakes, but did make it's way out that one way rubber grommet valve and then onto the tranny a bit. Thanks!