I'm having the same problem as enochs, these stands weren't made very well, I can't tighten any of the screws enough to have a real headphone stand with this thing. It looks like just mobile left way too much debris from machining for the screws to fit properly.
ericwmIf you're having issues with bottom screw unable to tighten all the way in, please email support@just-mobile.com to get your rod replaced. Please advise color of your HeadStand, issue at hand, and shipping address. Do not force it to tighten if it is not going in. We'll replace another rod for you. Just Mobile Support
ericwmShould have read these earlier. Had the same exact issue and now the screw is stuck in the pole and stripped from trying to tighten then remove it.