Ok, I spent most of the time deburring the edges of all the angles. I decided to just work on one seat back at a time and it took quite a while to deburr the thick angles pieces. I started each edge with the course file, then followed up with the fine file and finished the edges up with the scotch brite wheel. Once complete with the deburring, I used the dremmel to remove one eyelet. I also read that someone added a line from the locating hole to help align the hinge prior to match drilling. It wasn't too big a deal for the F-1237H and the F-1237F (Aft) hinges, since you could visually see it was straight. The line idea worked great for the F-1237F (Fwd) hinge to the seat back.
prepare hinge for seat back
locating hole clamped and ready to match drill
added line to help keep hinge in the right location
