Well, if you like knife edges, you're going to like it. It will do a knife edge loop, but I've got a long way to go to clean it up and make it round -- the second and fourth quarters of it are still quite ugly.

Nonetheless, fantastic knife edge characteristics. I have no mixes on mine and there is zero coupling for elevator and aileron. Very clean rolls, and very stable in the air. Stays right where you put her. Stall turns rotate on a dime and give you change. I did mix in a tiny bit of down elevator for low throttle downlines because it pulled to the canopy slightly. Hey, wings gotta have a little incidence.

Yep you can still have a lot of fun with it with a .91, but it just flies so doggone well that it begs for a bigger engine to extract more of its potential.