My boat is a 1995 model that I have owned for two years. In thinking about what maintenance needs to be done to get it ready for Spring, two things (among others)have come to mind on which I need advice. 1. To my knowledge, the steering assembly has never been lubricated or serviced in any way and I'd like to be able to do that. 2. My through-hulls are made of some type of black plastic and are becoming so difficult to open and close that my wife can't even do it anymore. Obviously, they need some maintenance. Can someone please coach me on a procedure for each of these, including what type of lubricant to use in each case? Thanks. Skip