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How to Repair Bifold Door Top Roller Guide If your bifold door is sticking, it's likely that they need some maintenance. It is possible that you need to clean and lubricate them or adjust them. The issue could be caused by an unfastened bolt on the top pivot or by the top guide roller. This kit contains everything you need to restore your bi-fold wardrobe door to its best performance. Remove the Door Installing a set of internal bifold doors could seem like an involved and difficult task howeve