here ya go. i built these cross members at work last week.

they're 1 inch by 1 inch by 1 inch by 1 inch by 1 inch. it took some fancy fabrication. they're so small, the piece wouldn't fit in the brake once i made it to the 3rd and 4rth brake. i had to do some of it with a rubber mallet and by hand. i did it before work so i didn't have time to take pictures.

i finally got around to riveting them to the frame/deck. it really added a lot of support to the deck. i can stand on it now and it doesn't act like it's going to cave in.