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How to Repair Bifold Door Bottom Pivots The misalignment of your doors could be the reason for your bifold doors becoming sagging and scraping on the floor. A few minor adjustments will get them back on track and running smoothly. This pivot's bottom mounts to the floor or base of a bracket for a sturdy, secure mounting. Threaded for adjustment, this kit can be used with a wide variety of bi-fold doors. Anchor or pivot pins that have cracked or broken Anchor pins and pivo