Big Ed.. I wear no blinders.... except maybe for the Spektrum DX7 and Airtronics vs just about everything else..

and somehow, I just can't figure out where to mount the prop on either one of those.
So, I am looking for a viable replacement for the OS .75 AX. Not that I don't like the OS, quite the contrary. I love it. But I am interested in spreading my wings, broaden my horizons.. yeah yeah yeah...

and trying a four stroke.
I had an OS 52 Surpass, and oddly enough, it was on my Goldberg Skylark 56 (RIP). I sold the engine to someone that wanted it more than I had a home for, so I sold it to him. To my knowledge, he has not put the engine in anything yet, and that was four or so years ago.
Anyway, as I said, no blinders here. I am pretty much game to try anything within reason.
CGr.