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How to Repair Bifold Door Bottom Pivots The misalignment of your doors could be the cause of your bifold doors becoming sagging and scraping on the floor. A few minor adjustments will put them back on track and running smoothly. This pivot's bottom mounts to the floor or the base of a bracket for a sturdy, secure mounting. This kit is threaded for adjustment and works with many bi-fold door styles. Broken or cracked Anchor or Pivot Pins The anchor pins and pivot pins on a bifold door can fail or are misaligne