i've adjusted Marker bindings for various boot sizes before (remove the binding, select boot size range, remount on the rail, set DIN and check forward pressure), but these look different (2010/2011 Volkl AC20). i guess Marker changed the system since the last time i did this, there is now a lot of movement available without having to remove the bindings from the rail...which i guess is nice. but i don't understand what the numbers written on the bindings are in reference to. i would assume boot size, but it doesn't seem to be the case. can anyone tell me what these numbers are referring to (circled in red in the attached pictures)? of course i could easily adjust the bindings to fit my boots with no regard for the numbers, but they obviously are supposed to help me center the boot properly on the ski, right?
i'm sure it's a simple answer, but any help is greatly appreciated.