Removed the center latch gearbox and installed another reinforcing block into the door next to the gearbox slot on the right door. (Previously installed block was pushed too far away from the gearbox slot.)
Installed the center latch gearbox into the left door. Installed the rear latch rod with gear rack into the door and through the center latch gear box.
Have to wait until I get new center connection rods to move forward with completing this latch.