The garage door may have looked fine in the dark, but after the spring snaps on a cold morning, it becomes heavy, stuck

https://springrepair733.cavandoragh.org/broken-spring-replacement-for-a-garage-door-that-slams-shut-in-cold-weather

The garage door may have looked fine in the dark, but after the spring snaps on a cold morning, it becomes heavy, stuck, and clearly broken.