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How to Repair Bifold Door Bottom Pivots A misalignment could be the cause of your bifold doors becoming sagging and scraping on the floor. A few minor adjustments can bring them back to their proper alignment. The bottom pivot is attached to the bracket base or floor to provide an extremely secure, sturdy mounting. With a threaded adjustment, this kit works with a wide selection of bi-fold doors. Cracked or Broken Anchor or Pivot Pins Anchor pins and pivots could break or become