How to Repair a Bifold Door Top Pivot The top pivot could become loose and scrape the floor. You can correct this by loosening the set screw on the top bracket slightly. The pivot pin on the top is a screw made from metal that fits into a plastic cap https://bifold-doors-repair66620.bloggerchest.com/30601346/17-reasons-you-shouldn-t-not-ignore-bi-fold-door-repairs