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How to Repair Bifold Door Bottom Pivots If your bifold closet doors are sagging or scratching the floor, it's probably due to misalignment. A few basic adjustments should get them back on track and running smoothly. This bottom pivot mounts to the floor or the base of a bracket for a secure, sturdy mounting. It is threaded to allow for adjustment. kit can be used with a wide selection of bi-fold doors. Anchor or pivot pins that are cracked or broken The anchor pins and pivot