I finished off the spacers, cleaned up the area and epoxy glued the spacers to the frame. I used duct tape to avoid sliding and clamps for medium pressure. The day after I could remove the clamps and admire the work. A void in my life is now filled. I have fulfilled my destiny.
I want the glue to be strong so they can with stand the filing and sanding. In the end they are secured with the skin rivets.