Hi, I have a 1995 Force 70 hp outboard. My prop spun off. I've got a different prop and the nut/keeper kit, but not sure about installation. The keeper is made to fit between 2 'tits' on the old prop. The new prop doesn't have those little '*** posts'. The new nut has a (vinyl? plug?) built into it. Assuming the plug part will come out as the nut is tightened down and acts like a locknut. Since the keeper won't do anything since it will be able to spin with the nut, should I use a conventional lock washer or double nut it? The thrust washer stayed on when I lost the prop and it's beveled side is facing the prop and it's flat side is facing the motor. Is this correct? Thanks in advance! John