1987 omc cobra drive. The oil seal that is behind the gimbal bearing. Drive Shaft slides through gimbal bearing then Oil seal this is the one Im speaking about.Manuel say install with the inset out . what is the "Inset" Looking at the oil seal there is a face to it & on the back side you can see the round spring. Which side face out toward the outdrive. Also what oil does this seal keep out? when i install the drive back on does oil get into the boot side or from the spline side. Oil Seal = keeping oil out? help me out guys, thxs