I have a 1980 max 11 oh160 motor was doing great till i parked for the winter and some how it got hit hard enough to pop the right axek from the holder so i was getting ready to try and repair it and when i went on richards relelics fond that there are 2 sizes so here it goies how do you tell if its 62 or 72 mm befor i tere in to it will the flanges be stamped thanks for any information in advance I was thinking of getting rid of all but grandma says the grand kids need them and like them