How to Repair Bifold Door Top Roller Guide If your bifold door is sticking then it's likely that they need some maintenance. They might require cleaning, lubricated or adjusted. The problem may be caused by an unfastened screw on the top pivot or by the top roller guide. This kit https://bi-fold-door-repairs49108.blog2learn.com/78674052/10-mistaken-answers-to-common-bi-fold-door-repairs-questions-do-you-know-the-correct-answers