But that shouldnt be a big deal. you should anchor it properly with central screw before start using it. I would not buy them again, nor would I recommend them. I wore it as soon aa it arrived straight until after my workout ( 8hrs). I was extremely impressed at how easy this thing is put together and how they separated the parts by step. So Im not really interested in wearing socks with them right now. They come with packs of adhesive foam pads and instructions for used with different thickness doors. Does the job ?? But that is with normal socks. The hitch mount doesnt have a large enough hole for a locking pin, but theyve included a bolted pin with what appears to be a non-standard lock mount.