https://telegra.ph/A-Brief-His....tory-Of-Replace-Bifo
How to Repair a Bifold Door Top Pivot The top pivot of the bifold closet door could be loosened and scrape the floor. This can be corrected by loosening the set screw on the top bracket. The pivot pin on the top is a metal screw that is inserted into a plastic cap that has an lipped end that is within the track, above the door. You'll need a screwdriver and possibly pliers. Take off the pin at the bottom. Bifold doors are ideal to save space in closets but they may begin to buckle or scrape