AJ,
I am interested in your upgrade from the Fox 19 to the Fox Stunt 35. Did the plane fly (at least somewhat) on the 19? I want to avoid major surgery on my engine mounts if possible. One thought was to take thin aluminum "flats" and drill mounting holes through for the K&B 19 as well as the K&B .29. The current mounts (KB 35) in my Super Ringmaster fit to the K&B 29, so I could just overlay the flat and bolt to the original bolts (K&B 29/35). Then bolt the K&B 19 through the new holes. This would be a small offset of the engine but should fit ok for a single test flight. Thoughts?
aaganz