Thanks Justin, I just came back from running the engine and she was happy to comply. I never run synthetic oils and almost always add a small amount of castor no matter what the bottle says. I've always had good luck that way.
Yep, the airplane is in really good shape... The Monokote (if that's what it is) has no ripps or tares. After I hit the whole thing with soap & water she cleaned up very well. See the photo of the engine after the antifreeze bath.