I have read many post of the subject of the Amel floating ground system and how this applies to the engine, and starter. I have also heard that the Perkins M80T was the only engine made for a floating ground. So I would like Amel owners, who have repowered their Super Maramu with Yanmar, 4JH80, how they addressed the floating ground issue. Was the engine modified at the factory or did the installer make modifications to the starter, alternators etc.?