I took the carb apart on a 72 4 hp johnson seahorse ant the float looks like a burnt doenut.LOL. What is it cork ??? If so should I replace it when I do the carb kit or is this the way it is supposed to look . It did not seem to have absorbed any fuel .It looks original, would a new float for this model be the same thing or woud it be like a modern float ( what ever they are made of ) .