OK, so I've taken the headband apart to see what was causing that popping feeling in the headband.
The yolks, when the cups are at an extreme angle, push against the frame of the headband, which in turn means they sort of "pop" back into place when they push off the frame as you adjust them. This is quite annoying, it just feels cheap and crappy, however I would think this wouldn't be too hard to fix. As I've got them in the pictures, that's the absolute maximum extension of them, so all you would have to do is cut away a little more room off of the frame so that the yolk could move totally unrestricted when you swivel the cups around. It would be a tiny cut, nothing major, it shouldn't affect the headband's strength at all. I don't really have the machinery or know-how to do this myself, but I could probably find somebody who did. Or maybe I could buy myself a cheap, basic tool just to grind away the extra space needed.
Edited by HeretixAevum - 11/12/13 at 10:00pm