I get a solid beep at times around 4000 RPMS, I let off throttle, get back into it and the alarm goes away. I recently added a new jackplate and the fellow who installed the jackplate pulled the alarm and said it was a port side overheat (27 times) & the motor has 147 hours on it, have noticed that the water pressure is 2 - 4 at idle and 14 -16 at WOT (6000 RPM'S) recently. Water pump, impellor or popet valve????? Is any of this covered by Mercury? Does anyone know of a good service department in Cincinnati? Thanks