Because some of the cam holes are drilled too far from the edge, the cam locks don't engage with their mating screw properly and break apart. I have assembled dozens of furniture like this in my life and never come across such cheap, flimsy, worthless parts. The manufacturer sent extra "better" parts and they too broke apart. This problem started mid assembly so is no longer able to be returned. I'm going to have to glue the rest of this garbage together or burn it. That aside, Wayfair customer service was awesome about handling the issue.