We measured off the spacing for the screws in the rear bulk head and drilled them. Then we installed the 14 nut plates. See Image #1. All seemed to come out very well. We rechecked that our spinner is still centered and doesn't wobble. ...... Then we fashioned one of the filled plates for the spinner and it fits well also. See Image #2. We still have to rivet this in place on the rear bulkhead. There is also a small plate that needs a nut plate to anchor the filler to the spinner. The front bulk head also needs drilling and having nut plates installed.