This is my first post & I hope I'm doing it correctly. I own a 2006 Hunter 38 with an hour meter on the tachometer that is not reading. Anyone have any experience with this? The tachometer works ok but nothing registers on the hour meter. I took the panel off and saw that the tach is not a yanmar but a Siemens VDO tack that was evidently made for yanmar. Any help would be appreciated.