[Nico13 (Ken)]

Here are the pictures keeping in mind that my scope is around 25 years old, newer units may well have changed.
One other thing I thought of, if you remove the secondary holder as shown here be careful not to turn the corrector over as it will come away from the center pieces and would be hard to tell which is the inside from the outside.
You can see how the cup washers fit on the center pivot this why you must never loosen the screws more than a turn before tightening the opposite side.
Fine adjustment is made with very small screw movements.