I have read several posts about after new install of an engine, people have seen white smoke in the engine compartment and smelled burning rubber. I too have this condition after a new install of a 1987 4.3 in my sea ray. I just can wrap my mind around how pulling the outdrive and greasing the inside teeth on the coupler prevents it from damaging the coupler. Any help understanding this would be greatful. Unfortunately, they didnt put the zerk fitting on mine in '87.