Blade rocker length

[docar15 1]

Does anybody know if there are standards for rocker length for more popullar rockers? My local shop only has 9 and 11ft guides. I have two skates, CCM V6 and Graf 709. CCM has a 271mm blade and Graf has 272. Almost the same.

When I put the blades on the template, they both look like 11ft rocker. But, CCM blade touches the guide for about 5 inches, where Graf touches the guide for almost 6. I am expecting too much from mass production and should just eat it and properly profile my blades :-)?