Just received my H2D yesterday and the same issue, but both the rear screw drive and the smooth rod are out their positions.
Also, the left side panel has a small gap at the bottom that I cannot get clicked back into place and the front door is out of alignment with the opening, so it pops open. My guess is that the box was abused by FedEx (typical for us, most packages they delivery have cuts or mushed corners), but it looked mostly okay except for missing one of the plastic clips that secure the outer box.
I’m dreading having to return this and waiting for inspection and replacement. ticket open, will see what they recommend.