[TR] tr-3 rear wing clamp?

[Gary Nafziger]

I'm working on initial fitment of the rear wings and in purchasing cage nuts
ect. I found that TRF was selling a rear "clamp" for the rear wings.  It's a
fairly heavy piece of metal approx. 3 inches long with a cage nut welded to
it.  The end opposite of the caged nut is bent 90 degrees but the bent out
part is only about 1/4 inch.  I can't figure out where or how they go. 
Anyone have any ideas?

gary n.