since that chewed edge doesnt really seal anything, you could put it together as long as the rest of the mating surfaces were true and would hold a gasket. i wouldnt use those on anything good, but if it was just a gutless beater 701, its not going to be anything you would notice. not worth buying cases like that, i know i wouldnt. what caused that chew mark? somebody trying to pry the cyl off?