Wow, thank you guys. I had heard a few things about each gent over the years, but never put it together like that. So I actually have both versions then. This, and one on an ebeneezer biplane.
I've got a real good feeling about this engine. Took a little work to get it unstuck, but now it turns very freely. I've been scrubbing it with a soft bristle tooth brush and rubbing alcohol, followed by a light oil. With my finger over the plug hole, and thumb in place of the back plate, it has a very smart 'pop" to it!