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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 the floor. A few simple adjustments can get them back on track and running smoothly. This pivot's bottom mounts to the floor or base of a bracket for a solid, secure mounting. This kit is threaded to allow for adjustment and works with a variety of bi-fold door designs. Cracked or Broken Anchor or Pivot Pins Anchor pins and pivots can fail or be misaligne