I've asked on the gear forum, and was directed to ask over here as well:
I am strongly leaning towards using the boot cuff alignment adjustment to assist the tracking of the knee over the foot, as opposed to centering the tibia in the cuff. The idea being to align the frame so that the forces generated by the skier are directed through the ski, not at some weird angle.
IIRC, from weightlifting that during a squat the each knee should track just slightly towards the big toe. Certainly not between the legs, and certainly not towards the outside of the foot. I am very aware that this may be contrary to the skiers natural stance. But, I observe that when I lift very heavy things, the knees are always over the feet.
You'll hurt yourself if you lift knock kneed or bowlegged. I cannot help but think you'll hurt yourself skiing that way too...