realskiers

G,

Interesting observation. Memory recalls that John Botti always states that he likes stack height as it gives him better tipping ability. So your little experiment conflicts with the 'all bindings are pretty much the same' mantra. I also seem to remember the Marker Griffons  are marketed to wider skis, and, guessing that below a 78 they may be too wide. I did see some Marker PR11's on Evo for $110 and that binding is suited for a skis with a waist near 70.

Did you set up the bindings so your fore/aft boot position was on the same point? Did you use the Power Rail adjustable feature to make any changes?  I know Jim R is a big fan of this binding.

Just thinking out loud, but, demo a 70 ish waist next time you are on typical eastern conditions (Dynastar Cross ti or Elan Waveflex 12). Spring snow sometimes is too easy, plus, the added stiffness of a 78 helps get through crud over a carver. I think that Bristol's demo program, which is right at the top of the mountain and inexpensive is a marvelous way to compare skis.

Just an educated guess, but, the Kastle 78 will not be in your quiver come next December.