John, you stated "To press the bushings in the stab sockets use a C clamp. Do not beat on the bushings with a mallet."
Did you use the recommended Loctite 680 Retaining Compound? The tech info with that product states to apply to both surfaces and "assemble with high press rates". I have managed to install 3 of the 7 so far, but for 2 of the 3 I had to resort to a small hammer against a backing plate to get the final 1/8" or so. It seems the RC680 sets up really fast. No way would I be able to use a C-clamp fast enough. I used a Vise Grip 11R on my third one to get most of the way quickly after making sure the bushing/bearing was starting square. The aft center location looks like it will be really tough due to the decreased accessibility between the ribs.
I would be very interested in hearing your (and others) thoughts and experience on this step.