Review all the posts in the original thread, especially Luke's post #21:
I used his method.
1. Loosen the rudder pedals
2. Remove the control column sliding it forward (make note of hardware for re-assembly)
3. I used a Rigid See-Snake camera to light and view inside the center section
4. I used the Aircraft Tool Supply nut/washer holding tool but you could fashion something on your own
5. I used a box end wrench taped to a rigid aluminum tube.
The inside 8 bolts are "easy". The outer four more difficult but do-able. The first six took me 6 hours. The second six took me three. I did it alone.
Plan on acetaminophen and a massage afterward.