I like to think I am all over maintenance and that's why I tend to run well most summers, but today proved sometimes being lucky helps too. I change my cool fuel filter every year but since I have had the boat I never changed the secondary filter at the bottom of the cool fuel module until today. Below is s picture of what the filter looks like. I'm not sure it's ever been changed. I think I have lucked out that this black mess hasn't dislodged and clogged something. I'm sure it helps the fuel lines are high on the cool fuel module too. If you don't change these or know about them you may want to investigate and change. The pn is 35-892665.