How to Repair Bifold Door Top Roller Guide If your bifold doors have become stuck, they probably require some maintenance. You may need to clean or lubricate them, or even adjust them. The issue could be caused by a loose screw on the top pivot or the top roller guide. https://repairingbifolddoors91064.blogdosaga.com/30625324/7-little-changes-that-ll-make-an-enormous-difference-to-your-bi-fold-door-repairs