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How to Repair Bifold Door Bottom Pivots A misalignment could be the cause of your bifold doors sagging and scraping on the floor. A few minor adjustments can bring them back in line. This pivot's bottom mounts to the floor or the base of a bracket to provide a solid, secure mounting. With a threaded adjustment, this kit works with a wide range of bi-fold doors. Cracked or Broken Anchor or Pivot Pins Anchor pins and pivots could break or become misaligned on bifold doors which causes the doors to bow and scrat