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How to Repair Bifold Door Bottom Pivots The misalignment of your doors could be the reason for your bifold doors sagging and scraping on the floor. A few simple adjustments can put them back on track and running smoothly. The bottom pivot is attached to the bracket the floor or base for a sturdy, secure mounting. This kit is threaded for adjustment and works with a variety of bi-fold door designs. Cracked or Broken Anchor or Pivot Pins The pivot pins and the anchor pins on a bifold door often fail or are misaligned,