ORIGINAL: R/C Foolish
Cut your throws done a bit and see if the problems go away. Too much elevator on any plane will cause a snap.
R/C Foolish
I believe that has been suggested several times but it continues to fall on deaf ears. Maybe it is fun to continue to search for a way to defy a basic law of aerodynamics,................'til your luck runs out.
A good model to horse around the sky in tight maneuvers using lots of control surface throw is the U-Can-Do 3D .46 and similar models with a fat wing and low wing loading.