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How to Repair Bifold Door Bottom Pivots The misalignment of your doors could be the cause of your bifold doors sagging and scraping the floor. A few simple adjustments can bring them back to their proper place and running smoothly. The bottom pivot is attached to the floor or the base of a bracket for a secure, sturdy mounting. Threaded for adjustment, this kit can be used with a wide variety of bi-fold doors. Cracked or Broken Anchor or Pivot Pins Anchor pins and pivots could be damaged or misaligned on