I woke up late this morning so I could only squeeze in a short session. I drilled out the right tower cover plate (center portion of the web) for #8 screws using a #19 drill bit. Then I removed the cover and started drilling the tower for the nutplates that will eventually get riveted into place. Good progress for a short amount of time.
Drilling the right tower for the #8 screws that will secure the 'cover'.
Using a nutplate jig to drill the nutplate rivet holes.
