Replied to your other thread. In short, the heads are toast. If your running open cooling with aluminum heads and they are not hard anodized and your in saltwater the life expectancy will be 1-3 years. Your probably looking at a complete rebuild plus new heads. Exact same thing happened to me. I ended up repowering with all stock cast iron heads. After my experience I was not going to risk another $15K by relying on a hard anodized coating.