i've had my boat for 2 seasons now, '76 proline cuddy, with 1980 200johnson, i noticed last season that the two scuppers on the back transom that lets the water run off deck were below the water line, like the back end was sitting low in the water, could have sworn it wasn't that low season before, haven't changed anything or removed anythign on boat to change weight etc.. what could be causing this, there is no water in the bilge, should the scuppers be above, below or even with water line? thanks in advance