Hi Bernie,
I used the MVVS 116 with K&S cannisters, I have got the same engine in my Pitts see:
http://www.rcuniverse.com/forum/m_44...tm.htm#4498075
I like the engine verry much, it is strong, smooth and verry litle vibrations.
I am running it now on the Pitts with a 27x12 3 blade Super silent from Engel.
On the Waco i wil use a 30/31x10 2 blade prop.
Cesar.