Well, folks, I'm impressed.
I put the engine on last night, just finished getting the wing mounted, it took a little grinding for the holes to line up, but nothing that shows
I put it on the CG machine just a few minutes ago. It was slightly nose heavy!! Yeah!! No weights needed up front. So, the OS 75 AX with their 'power-box' muffler installed worked out just fine for balance. Now, I have to attach the elevator and the rudder and it's ready to maiden... after, of course, I run a couple or three tanks of fuel through that beast.
Pictures will follow.
CGr