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How to Repair Bifold Door Bottom Pivots Misalignment is likely to be the cause of your bifold doors becoming sagging and scraping on the floor. A few minor adjustments can bring them back to their proper alignment. The bottom pivot is attached to the floor or the base of a bracket for a solid, secure mounting. This kit is threaded to allow adjustment and works with various bi-fold door styles. Anchor or pivot pins that have cracked or broken Anchor pins and pivots may break or become misaligned on a bi