Be careful when you replace the graduated knob on the end of the damping-adjustment rod. As more than one of us has discovered (note requests for a replacement knob in the "parts wanted" forum), only slight overtightening will break-off the end. Plumb the depth of the threaded hole in the knob and mark it on the rod ---- don't go beyond that point, instead back-off to get the graduation marks visible from the top!
A small and non-fatal but really irritating 'gotchya' at the last step of re-assembly