I would like to ask about my 1975 70 HP 3 cylinder Johnson outboard. I am trying to find out how to take the oil seal directly behind the prop off for replacement. Does the seal simply slide off or is it retained. There is also a large rubber seal inside of the prop, can this be replaced or does it come with a new prop. I have a beautiful old 16' 1959 Dolphin with an 8' beam that this motor pushes along at a good clip. Thanks for taking the time to help me out. I will post a photo in the next day or two if any of you would like to see it.