You evidently have never had the impeller catch the gasket during an impeller install, I have years ago and then you get to do it all again. Mercury also says to replace all of the gaskets and use a non-mineral base lubricant. Where does his post say a 2.4 or 2.5 Merc?
“The world will not be destroyed by those who do evil, but by those who watch them without doing anything” Remember what He has done and remember that He is not done yet! GOD IS GOOD