Asked them what they meant by the "We recommend lightly detuning them from about 2 inches toward the binding of the contact point all the way to the tip and tail of the ski. "
K2 replied as follows.
with the brake pulled up off of the surface (like it would be if your
boot was clicked in) you will see the front and rear contact point of
the ski on the table. You would just want to detune from that spot to
the tip of the ski and then get just a little bit extra going toward the
binding. Basically that will just make the ski feel a little more
maneuverable and easier to get from edge to edge. Hopefully that makes
sense, but let me know if you have any other questions.