I purchased my boat about 4 months ago. After putting on about 40 hours I noticed the red ring in the little in-line fuel filter had floated to the top. I read in the owners manual that this meant there was water in the filter. I bought a new in-line filter and a new external filter. The manual said you can clean the in-line filter with a solvent and reuse, but the guy at the service center said I should always replace it. So now after about another 40 hours the red ring is floating again. My question - is it normal to have to replace these filters so often? And, can I just clean the in-line filter with a solvent? Do I need to replace the external filter too? And, what should I do about the water problem. I read that keeping the tank full helps with the water/condensation issue, but I have not been leaving the tank full because my tow vehicle is not exactly what the boat requires. Until I can afford a better vehicle, less weight helps. Thanks for any and all suggestions.