I have a Brand new 1/4 inch thick 6061 T6 motor plate . I was told to use YAMABOND (the stuff that seals casehalves on motorcycle and snowmobile engines) and NOT to use gaskets... I rebuilt snowmobile motors in the 1980's and 1990's and used YAMABOND without issues... Does ANYONE use stuff like that in place of water pump gaskets????? BTW,,, its a 4.5 inch bore WORLD PRODUCTS 440 block stroked to 572..