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How to Repair Bifold Door Top Roller Guide If your bifold doors are sticking, they probably require a little attention. They could need to be cleaned or lubricated, or even adjusted. The issue could be caused by loose bolts on the top pivot or by the top guide roller. This kit contains all the hardware needed to return your bi-fold closet door to optimal performance. Remove the Door It may appear complicated and difficult to set up an internal set of bifold doors however for DIYers with some experience i