I had the same problem while traveling in PA, hit a big hole in the road and 3 of the clips detached from the channel on the bottom, tried to bend them back in to no avail. What fianlly worked was that I removed the inside screw on the bottom rail ( one inside shower enclosure ) pulled out the extrusion, tilted it up a bit and re-inserted the clips, pushed the extrusion into it's retainer on the jamb of the enclosure and reattached. Took about 5 miuntes. I would mark the area where the screw hole is so it will be easy to screw it back in when done, this avids the possibility of making another hole in the wall. So far so good.