I marked the left and right cover top edges with the locations of the attach screws as depicted in the plans. After attaching the rear covers in their locations I made sure that all looked good and then drilled the screw attach holes in the upper edge that attach to the armrest.
Next was drilling and installing the nutplates. I had to use a one lug nutplate at the end. I do not have a drill jig tool for one lug nutplates. So I used my little screw/tube setup and attached the nutplate to the outside and match drilled the holes using the nutplate itself. Worked great. I was able to use a stubby screwdriver to attatch the nutplate.
The installation of the left and right rear covers are complete!