I began today by cleaning up all the edges on all the parts for the rear seatback. I then cut the hinge to length and drilled the locating holes. It took me quite a while to figure out the orientation for the hinge and I actually ended up making a second one because I drilled the locating holes on the wrong side in the first one. The plans aren't totally clear on the hinge orientation.
I then moved on to the assembly steps in the manual. I bent the tabs on the F-833C and then clecoed everything back together and drilled all the holes.