How to Repair a Bifold Door Top Pivot The top pivot of bifold doors can become loose and scrape the floor. You can correct this by loosening the set screw of the top bracket slightly. The top pivot pin is a screw made from metal that fits into a plastic https://bifold-door-roller-replac62526.thezenweb.com/watch-out-how-bi-fold-door-repairs-is-gaining-ground-and-what-to-do-about-it-68356314