No mistake about it SJack. I looked into the Hatori's, and Mac's. Plane flies no different with stock, and the stock muff tucks very decently close to cowl. I checked out the OS because one of the guys in my club installed OS accessories, and they are as good or better then aftermarket. the accessories are typical OS quality, perfect fit. They have a whole line of stuff for all thier engines.
The plane flies very well the way it's set-up.

Thanks though.