Perhaps my first post wasn't clear enough.

When I fly her, I go easy into the turns, kinda like it's a Zagi. Coordinate the rudder and ailerons and bank it soft and bring it around. I tried to do an S turn (I think that's the maneuver... Go inverted and up elevator to bring it around) and it snapped. It'll fly ok if I go easy on it, but I was just wondering what would cause this. Eliptical wing? Right thrust on the engine?

LUC, I hear ya about the CG. The manual had 110mm first, then amended it to 105mm. I could get the 110 easily with a FL-70 4s. It flew REAL squirrley, so to get the 105mm I had to add 16oz of engine. Seems to fly ok now, feels a bit heavy but adding a pound of weight will do that.