I noticed in one of the posts, that a person was saying something about the ply doublers not being far enough back over the wing on the PT-19 plans. Also the statement was made that maybe we are over building our planes. In some cases i agree with that statement. The ARF Flite Streak my grandaughter is/was flying is a case in point of what I see. When she hits the grass a little too hard trying to do things while flying it pops off. It usually takes a little epoxy and its back on. This last time she went in almost verticle. I had to replace some of the leading edge this time and do a little recovering. Also had to glue some of the ribs back together. The hard spars are still solid. I beleive that if the ply had been extended back to the high point of the wing there would have meen more damage. My opinion, DOC Holliday