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How to Repair Bifold Door Bottom Pivots If your bifold closet doors are sagging or scraping the floor, it's probably due to misalignment. A few simple adjustments will get them back on track. The bottom pivot is attached to the bracket's base or floor to provide 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 The pivot pins and the anchor pins on a bifold door often break