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How to Repair Bifold Door Top Roller Guide If your bifold door is squeaking it's likely they need some attention. It is possible that you need to clean, lubricate or adjust them. The issue could be caused by a loose bolt at the top pivot or by the top guide roller. This kit contains everything you need to restore your bi-fold wardrobe door system to its peak performance. Remove the Door Installing an interior set of bifold doors could seem like a complex and complicated task but it's actually easy for DIYers