The ones that hold the top wing section to the two legs are the same bolts that you use to mount it to the hatch. As you tighten them on the underside of the hatch the top section gets tighter. I can't see how it would sit off the hatch like that without some sort of spacer between it and the hatch. Whether it's a bolt or actual washers or soemthing, there *has* to be something there preventing it to sit flush