HI I have had the yanmar 27 hp in my 1997 336 overheat twice scince I bought her last year. The first time was the raw water impeller broke the second time I think it was the raw water filter that got clog. My Problem is I do not like to wait to hear tht idiot buzzer. I would rather have a gauge to tell water temp, oil pressure, alt and fuel gages. I talked to faria instruments thay have such a gage but it is not metric. Any one know of a gauge like this that is metric? From what I understand the sending unites have to be metric.thenks george