Match drilled, countersunk holes for the four nutplates in the rear section that attach to the mid longeron. Deburred and riveted the nutplates into place.
I riveted together the ski rack mount that will bolt to the nutplates. I actually don't know that I'll ever really use the mount and take skis on a trip? But I had done so much to design and build a rack that I felt I should at the very least put in the nutplates that would allow me to make that a reality.