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How to Repair Bifold Door Bottom Pivots A misalignment could be the reason for your bifold doors sagging and scraping on the floor. A few basic adjustments should put them back on track and running smoothly. This pivot's bottom is attached to the bracket base or floor for an incredibly secure and sturdy mounting. With a threaded adjustment, this kit is compatible with a broad selection of bi-fold doors. Anchor or pivot pins that are cracked or broken Anchor pins and pivots may fail or be misaligned on a