You're wrong. The ones you see in the images are the most you will ever see on the 267. The dotted piece is part of the headband, along with the thick padding and such. The cups retract and expand from there - meaning that you'll never see more dots than that. This picture explains better.
You can see that the cup can be pulled in and out from below the dotted piece, rather than the dotted piece being pulled in and out of the headband.