ahh good post. i purchased a gnu carbon credit btx and the original bindings i had paired with them were the same model as yours. i returned them for some flux feedbacks.
when i had originally mounted the nxt-at onto my deck, the holes didn't properly match up to the drilled holes on the board. i thought that perhaps this was just an issue with my board, or maybe the discs for the flows were slightly off, but it happened to be the case for both binders. i was able to put in three screws, but the hole on the disc wouldn't properly align with the fourth screwhole. the best i could do was to screw it in at an angle, which i didn't do all the way in order to save the threading.
hope that helps.