There should not be any binding in the screw. I've had 3 pairs, ya just turn, no need to tighten hard, just enough so it won't come out.
If you haven't figured it out yet, the neox actually has infinite forward / aft adjustment. Just move the toe and heel piece the same amount. You can add/substract the same amount from each number in the little windows.
As for moving the bands along the teeth, it is kinda funky. I recommend just using the palm of your hand, not a mallet. Let me know if you have a trick for this. I heard that Atomic can't let it just slide due to a Tyrolia patent, which will expire soon.