I did call Paragon in the beginning but was told that I did not have the unit installed and adusted correctly. It was installed correctly but because of the design, cargo hitting the channels/tracks that fold the unit, it was constantly getting jammed and falling off the track. If you never open the unit and never carry anything in the bed I suppose this would be a great unit to have. But, to actual use it and carry cargo it totally sucks in my opinion.