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How to Repair Bifold Door Top Roller Guide If your bifold doors are sticking to the wall, they might require some maintenance. You may have to clean, lubricate or adjust them. The problem could be caused by a loose bolt on the top pivot, or by the top guide roller. This kit includes all the hardware needed to return your bi-fold closet door system to its best performance. Remove the Door It may appear complicated and difficult to set up the bifold internal doors but for DIYers with some experience it's actually a breeze. The frame is not the pr