With the cover removed, the screw itself is observed rotating from up and down pivoting within the housing and the housing being secure. This may be the shimming described above. The link from the screw-end connecting the tail rotates up and down following the screw movement.
With the gained knowledge from here we'll do a closer inspection and take a photo. A video may be a better choice to show the issue if it can be down loaded.
Thanks for the documents guys! The journey begins...
Thanks again, John