I am re-installing the rear luggage rack on my 1982 Interstate that i recently purchased . The rack that the rear luggage mounts and locks onto is what I need to see how it mounts up. Does anyone know of an exploded view of the pieces. I seem to be missing parts where the rounded ends of the tube come together. I do not see how it mounts to the frame. ANY help would be awesome. Even taking my pic and photoshopping it to illustrate would rock.