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How to Repair Bifold Door Bottom Pivots A misalignment could be the reason for your bifold doors becoming sagging and scraping the floor. A few simple adjustments can bring them back to their proper place and running smoothly. This bottom pivot is mounted to the bracket's the floor or base for an extremely secure, sturdy mounting. It is threaded to allow for adjustment. kit is compatible with a broad variety of bi-fold doors. Anchor or pivot pins that are broken or cracked Anc