How to Repair a Bifold Door Top Pivot The top pivot of bifold doors can be loosened and scrape the floor. You can correct this by loosening the set screw on the top bracket a bit. The top pivot pin is a metal screw which fits into a plastic cap https://bifolddoorsealrepair86257.full-design.com/17-signs-to-know-you-work-with-bi-fold-door-repairs-73114830