rcdude7, there was another thing I forgot to mention, when I had to adjust the valves on the engine one bank was clean as a whistle and the other one had the black oily mess all over the rocker arm and under the cover too. I'm guessing that bank is the exhaust valve side with the black oily mess.
Looking at the picture of the plane you can see that oily mess is right behind the engine going up to the L.E. , there isn't any coming from the muffler on to the wing that I can tell. So maybe it's coming from the engine somewhere and getting mixed with whatever but the underside of the plane is always soaked big time from blow by.