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How to Repair Bifold Door Bottom Pivots Misalignment is likely to be the reason for your bifold doors sliding and scraping the floor. A few minor adjustments will put them back on track and running smoothly. The bottom pivot is attached to the floor or the base of a bracket to provide a sturdy, secure mounting. This kit is threaded to allow adjustment and is compatible with various bi-fold door styles. Anchor or pivot pins that have cracked or broken Anchor pins and pivot