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Bi Fold Door Repair - How to Fix Leaning Doors Without Removing the Hinges Bi-fold doors can be a elegant and practical way to connect your indoor and outdoor areas. Like all doors, they should be maintained correctly to function properly. You can do this by cleaning and lubricating the mechanisms including your lock so that they operate smoothly. This will avoid problems that can cause them to fall or get misaligned. Fix a Leaning Door It is possible