Can't find the water flow sensor or t-stats. The manual I have is pretty vague on locations. I've changed the water pump and want to check the sensors and t-stat for corrosion or blockage. Boat runs fine then all of a sudden I get the water temp alarm. pull the throttle back to neutral and shift back into forward and away I go. Seems to be getting worse. From what I can gather I have a sensor problem of some sort. Help is greatly appreciated.