Originally Posted by grilling24x7
I tested my Weber lid (22 in performer) and it was too small. So that's why I decided against doing another cooking grate 1 inch from the top.
I had the same problem on my recent UDS build. I got a piece of aluminum stock from Lowes, it was 1.5 inches by 72 inches, so it fit around with a little bit of overlap. I attached it to the screws that hold my top cooking grate and it protruded from the top by about a half inch. That holds the 22.5" lid perfectly. I would suggest you try. Having the extra cooking space is very much worth the extra work.