How to Repair Bifold Door Top Roller Guide If your bifold door is sticking, it's likely that they need some maintenance. You may have to clean and lubricate them or adjust them. The issue could be caused by an unfastened screw on the top pivot or the top roller guide. https://bifolddoorrepairsnearme76530.59bloggers.com/30923230/the-12-worst-types-of-the-twitter-accounts-that-you-follow