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How to Repair Bifold Door Bottom Pivots A misalignment could be the cause of your bifold doors becoming sagging and scraping the floor. A few basic adjustments should put them back on track and running smoothly. This bottom pivot is mounted to the bracket's base or floor for an extremely secure, sturdy mounting. It is threaded to allow for adjustment. kit can be used with a wide variety of bi-fold doors. Anchor or pivot pins that are broken or cracked The pivot pins and the anch