How to Repair a Bifold Door Top Pivot The top pivot can become loose and scrape along 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 that fits into a cap made of plastic https://bifolddoorreplacement91386.ampblogs.com/10-wrong-answers-to-common-bi-fold-door-repairs-questions-do-you-know-the-right-ones-67492028