For speed master mounting systems (threaded)
Position Your Support Ring BEFORE the Cushion Mount. The rim (edge) of the flange fits perfectly within the groove of the Cushion Mount creating a flush appearance. Apply pressure with your thumbs around the rest of the cushion to attach completely . This shows the correct position. Side View
Another view of a correctly positioned Cushion Mount. Cutaway
Another view of a correctly positioned Cushion Mount.
Finished Look
Another view of a  correctly Installed Cushion Mount. This Cushion Mount is installed incorrectly!!