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How to Repair Bifold Door Bottom Pivots Misalignment is likely to be the reason for your bifold doors sagging and scraping on the floor. A few simple adjustments will bring them back to their proper alignment. This pivot's bottom mounts to the floor or the base of a bracket for secure, sturdy mounting. Threaded for adjustment, this kit works with a wide variety of bi-fold doors. Broken or cracked Anchor or Pivot Pins The pivot pins and the anchor pins on a bifold door can fail or are misaligned, which can cause the doors to slide down, scratch