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How to Repair Bifold Door Bottom Pivots If your bifold closet doors are sagging or scraping the floor, it's likely due to a misalignment. A few basic adjustments should put them back on track and running smoothly. The bottom pivot is attached to the bracket the floor or base for an incredibly secure and sturdy mounting. This kit is threaded to allow adjustment and works with various bi-fold door designs. Cracked or Broken Anchor or Pivot Pins Anchor pins and pivots can fail