Question for a friend. My friend just had his skis tuned and the boot center mark was stripped off. Now he needs to mount bindings.For someone that has the head im82 in a 172 length. Can you measure from the tail to to the boot center mark? I'm guessing around 75 or 76cm's. I have the 82 in a 172 but my marks are also scrapped off. Based on my binding position, I'm estimating my boot center at about 75 or 76cm's.