From the instructions:
Slide in the Crumb Tray
a. Slide it in until you feel the feet settle into
the dimples in the base of the Glowforge
5. Make Sure the Handle is in Front
a. Check that the handle’s in the front, and the wide black part is in the back, just
like the picture. Otherwise, you’ll have mysterious printing problems, and feel silly
when we ask you if your tray is in backwards.
6. Close the Front Door.
With the crumb tray in the dimples, I try to close the door and it seems be binding up a bit, and not allowing the door to fully close. there is a small metal plate on the front door that seems to come to rest on the front lip of the crumb tray. I had to loosen the thumb screws on that metal plate and apply a little pressure to slide the plate up, then retighten the thumb screws. it’s still tight, but it just barely closes now. seems like the tolerance is a little too tight.