Should have listened to Les. Les said to get the ETEC.
If someone can post the picture from my album to this post please do so. If that can't be done you can go to my album and look at the last picture. In the area of the corrosion there is a brass bushing in a rubber sleeve around the stainless drive shaft surrounded by the aluminum housing. Poor design by Honda. Outboard mechanic says the new part will last another ten years and then fail again. Nothing can be done to solve the problem.