Sorry for multiple posts but I have a few more pictures to show. I found on the net a good way to stick the side rails on. Not sure how you other guys do it but I just peeled a small piece of the backing at the top end and folded it down at 90 degrees. Then I  bolted the rail at the front end and stuck the other end down with the backing sticking down. Then I simply pulled on the backing and presto, the rail was in the perfect position.