Give you alittle info here. I have a bayliner 175 that i purchased new in 2005. The dealer told me on my last visit that i need to bring it in and do alignment and replace the little propeller in lower unit. (not sure what it called). I am not having any trouble with over heating and runs perfect. Is this something that needs done or is the dealer just trying to sqeeze for alittle cash ? Thanks for your reply and thoughts on this !