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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 the floor. A few basic adjustments should put them back on track and running smoothly. The bottom pivot is attached to the bracket's the floor or base for an incredibly secure and sturdy mounting. Threaded for adjustment, this kit is compatible with a broad range of bi-fold doors. Broken or cracked Anchor or Pivot Pins Anchor pins and pivots