On my 1988 O'Day 302, the little plastic cover on the mast that covers the opening to the slot for the sail slides finally gave out today. (You slide open the little cover to insert the sail slides on the sail track on the mast -- and then you slide it back over the slot after the sail is on to keep the sail slides from falling out as you raise and lower the sail.)This is a little piece of plastic that slides on/around some rivets in the mast. Anybody know where to get a new plastic cover? I check with West Marine and couldn't find it on the web. Maybe I'm not searching with the right name? Thanks to all who respond.