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How to Repair Bifold Door Bottom Pivots The misalignment of your doors could be the reason for your bifold doors becoming sagging and scraping the floor. A few simple adjustments can get them back on track and running smoothly. The bottom pivot is attached to the floor or base of a bracket for solid, secure mounting. This kit is threaded to allow adjustment and is compatible with a variety of bi-fold door styles. Anchor or pivot pins that have cracked or broken The pivot pins and anchor pins on a bi