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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 basic adjustments should bring them back to their proper place and running smoothly. This pivot's bottom is attached to the bracket's base or floor to provide an extremely secure, sturdy mounting. This kit is threaded for adjustment and is compatible with various bi-fold door designs. Anchor or pivot pins that have cracked or broken Anchor pins a