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Bi Fold Door Repair - How to Fix Leaning Doors Without Removing the Hinges Bi fold doors are a fashionable way to open up your home and connect indoor and outdoor spaces. Like all doors, they should be maintained in a way that they function effectively. This can be accomplished by cleaning and lubricating the entire mechanism, including the lock, to ensure they function properly. This will prevent problems that can cause them to drop or become out of alignment. Fix a Door that is Leaning It