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How to Repair Bifold Door Bottom Pivots Misalignment is likely to be the cause of your bifold doors sagging and scraping the floor. Simple adjustments can bring them back in line. The bottom pivot is attached to the bracket the floor or base for a sturdy, secure mounting. It is threaded to allow for adjustment. kit can be used with a wide selection of bi-fold doors. Cracked or Broken Anchor or Pivot Pins The pivot pins and the anchor pins on a bifold door can break or become misaligned, which can cause the do