I have a 1978 srv 200, 260 merc. I noticed this week that I have about a half inch hole in my upper outdrive on the right side where the M would be on the mercruiser sticker. I had noticed that the sticker had started to lift off in that area and that it had a dimmple there. Now it is a perfect round hole like a freeze plug or something has come out. Any ideas.
Darryl
Darryl