An F3A pattern flyer in our club just bought one. I watched him fly the full sportsman pattern sequence with his and the only "problem" he had to compensate for was a tail low attitude in inverted flight. He had an Enya 50CX on his that was giving him problems, but the plane flies fantastic. His was balanced so that with an empty fuel tank it's nose gear is off the ground. He told me it was the rearmost recommended CG.

I'm thinking there's one of these in my future.