I removed the F-796B and clecoed the F-796C & D spacers to the F-796B angle. I aligned the part edges and match-drilled all the holes through F-796C & D using the holes in F-796B as guides.
I then clecoed the angle and spacers back in the fuselage. I was able to clean up small hole misalignments by running a #40 drill through the part stack-up. Large hole misalignment could have been cleaned-up by running a #30 drill through the stack-up and installing 1/8 inch rivets instead of 3/32 inch rivets. I removed the parts and set them aside for later installation.
Time : 3 hours.