Yeah these two are sharp. I would assume that these are on both the inboard and outboard rails but will have to confirm that. The inboard side is tight and hard to try to get your hand in to feel around. These are the ones that I thought everyone was talking about until RUBBER MAN showed me the one at the base of the seat back.

Mike... when you get the plastic covers off see if you can get some nice clear high res pics. Send them to me if you would like and I can get them posted.