How to Repair a Bifold Door Top Pivot The top pivot of a bifold closet door can become loose and scratch the floor. You can correct this by loosening the set screw of the top bracket slightly. The top pivot pin is an iron screw that fits into a cap https://bi-fold-door-repair89434.blogminds.com/bi-fold-door-repairs-isn-t-as-tough-as-you-think-28110312