Thanks. I was about to disagree with you, went back to Sheridan's picture and took a better look. He did have the upper panel loosened and sitting on the floor. Explains the oval hole. I guess maybe the only reason that there are screw holes down the length of the center support is because they made them all them same - reduced inventory. The hole patterns are the same. So thanks, I can move forward. I do have the two corner panels - just have to put the curve back in (thank you, powder coater).
Bob
