It took a while for me to get the headboard securely affixed to my full bed (adding on the plates to accommodate the changed size)— what I ended up needing to do was hold the screws in place with the allen wrench from one side while I tightened the nuts on the other side. You MUST make sure that the headboard is secure, or the wobbling might drive you crazy. But once it's in place, it makes for a tasteful, subdued bit of accessorizing on the bed that I like very much.