I'm the new owner of a bifold Redi ramp, but it appears to be missing some components. In one image I can see where it attaches to the tailgate, but I don't have those pieces. Could someone who has this setup show me exactly what it looks like attached? I'm also concerned about what appears to be a way to fasten it to the bed of the truck so it doesn't fall open. Standing it up right more or less in position it would appear those hooks land on the sheet metal to supports the tail light. And doesn't seem secure enough to hold that gate from moving.