When we got home from purchasing our camper 500 miles away one side of the window shade was hanging. The shade snaps into a clip on each side. The screw holding the clip had fallen out of the window valance. I figured out how to release the blind from the clips to take it entirely out. There isn't much to screw into at the top of the valance, maybe 1/4". I reinstalled the clip but am having trouble snapping the blind back into either side. The window is about four feet wide. I would think there should be another clip in the middle but there wasn't. Anyone have any ideas how to a) make the top beefier to accept a longer screw, b) trick to snapping the blind back into the clips, c) have a better clip system. Thanks!