Garage doors are funny things, aren’t they? Most people barely notice them until one chilly morning when the door suddenly refuses to open and the car’s trapped inside like a hostage in a bad action movie. One minute everything’s humming along smoothly, and the next—bam!—you’re staring at a crooked garage door wondering what on earth just happened. Truth be told, garage doors are among the hardest-working systems in any home. They open and close thousands of times over the ye