I hear ya.
But none the less, or is it numb the less? You have heard of 912s that leak a little oil into a cylinder after sitting for a long time. Then during burping procedure there is a noticeable effort required to turn the blade. the offending cylinder has oil in it and the lower spark plug can be removed to drain that oil. Where did it come from? The oil tank. Can it leak past the exhaust valve because not all of the valves are closed at the same time depending on where in the four stroke cycle, the engine has arrested. At some time, the intake and the exhaust valve are loosely closed are they not? I'm not sure, but other than a major breakage in the rocker arm assembly, piston rings, etc, I haven't a clue. What do you think?