Did anyone have this same issue? A newer boat, winterized and kept in an insulated garage in the winter, so only 6 yrs old and have a micro crack in the cast manifold, but enough to leak water, it is on the left side and starter is on same side under it, but not exactly right under it. Is there any easy fix, JB Weld, Quick Steel to try, or are they worthless and I should just replace the entire manifold, gaskets, bolts, O2 sensors, etc, expensive and some work involved. My older 96 Nautique never had this issue for 20 years. It is a CES Cantium exhaust manifold. Any advice is appreciated if anyone experienced same thing and any success or outcomes.