Oh that's fantastic Dan. When I get back on my other computer I'll zip up those other chapters so you'll have a pictorial reference to the text.
The one file I sent (Jacks and Tie-downs Chapter) has the details of the grid you mention. Early pictures in the chapter are hard to see it plain, because of the under spray coating on it. Late photos in the chapter show real good detail.
I was mistaken before. The grids aren't integral (and hard to remove), I meant the 2x2's method of fastening to the wing board and the camper box board (that right angle) was a major assembly with staples - hard to separate cleanly. Just saying - the grids come in and out easy.