I have an older Bayliner with a 120 Mercruiser that won't go into reverse. With or without the engine running it makes the same bumping sound. There is no grinding or anything like that, just a solid bump. The control moves a few inches at best in reverse then it there is a suddon stop when I hear the bump. Forward isn't a problem, it goes into forward just fine, just no reverse. I hope someone has an idea because I am stuck!