I have a 2013 Tige R20. It just started overheating as soon as I give it throttle. I thought it was the impeller and changed it. I also pulled the thermostat and tested it. It works fine. I thought I may have sucked up floating sludge at lake powell. I'm not sure how to check that? Is there an inline raw water filter? I can' find one. It may not be here? Any thoughts would be appreciated.