https://fkwiki.win/wiki/Post:T....he_Reasons_Why_Bifol
How to Repair Bifold Door Bottom Pivots Misalignment is likely to be the reason for your bifold doors becoming sagging and scraping the floor. A few minor adjustments will put them back on track and running smoothly. This pivot's bottom is attached to the bracket base or floor to provide an incredibly secure and sturdy mounting. This kit is threaded to allow adjustment and is compatible with various bi-fold door designs. Anchor or pivot pins that are broken or cracked The an