Sorry about your backing problem, this happened to me the first time I used my Grace EZ3 frame. Since my shortage was a bit more than a 1/4 inch, I just added fabric to the back and then trimed, added the binding and no one was the wiser. I've had my Grace EZ3 frame for over 3 years now and have learned to make sure I have at least 4"- 5" extra all around the top.