I just purchased a 1980 Hunter 27. The original Renault Diesel is shot and I am replacing it with a rebuilt Yanmar. We just realized that the shifter and throttle are now operating backwards. When you push the shifter forwards it puts the engine in reverse, pushing the shifter backwards puts engine in forward. Same for the throttle, pushing forwards puts engine in idle, pulling backwards is full throttle. It was all normal with the Renault. The boat has the original Yacht Specialties Company pedestal. Is there an easy work-around for this?