I have a 1981 28 foot O'Day. I am having all the cushions recovered but for the life of me I can't figure out how to remove the seat back rests in the forward corners. Anyone have experience with this? I can't find any screws in the head area which would seem to hold them in so I'm assuming there is some kind of bracket. I've thought of using a rubber mallet to strike the bottom and drive them upward out of the bracket but I really don't know if they're mounted that way.