Spinner Backplate Nutplate-Prepped

I put one and a half hour in in the evening but I don't have much to show for it. I removed the back half of the hub and the spinner backplate and wasted about 10 minutes to find a Nordlock washer I had dropped. The grey color of the washer matches perfectly with the gray of the concrete slab which did not help seeing it easily.
After that the backplate went into surgery and had the nutplate attach holes match drilled, using a nutplate as a template. It was rather time consuming and not exactly satisfying to fight the screw in to hold the nutplate, adjust it, clamp it, drill it, cleco it, drill again, and then remove everything only to continue the same procedure over and over on the next holes.
Eventually, it was done. 4 more holes on the front plate and 4, hopefully easier ones, on the side plates. followed by the obligatory countersinking - but that is for another night.