On the righ hand side of my Phaser 860 paper tray (viewed from the front) there are three small rectangular holes, adjacent to three black sprung plastic clips inside the machine. the other day a small plastic clip fell off the machine, since when the machine always jams paper in the front area on any print. Can anyone tell me if these are related? Do the small holes have to be filled with these clips? Did I miss another one which fell on the floor?