A freind just bought a small boat with a Volvo 4 cyl motor. The only mounts on this boat for the engine and outdrive are where the outdrive mounts to the transom. I see no evidence that the engine ever mounted to the stringers. Is this right? Unfortunately the transom has rot and the weight of the engine is forcing the outdrive to separate from the back of the boat causing a major leak. He is looking into replacing the rotten transom, but I'm still baffled by the mounting of the engine/outdrive. I don't know much about these setups, so any help would be appreciated.