The failure mode we watch for is a door that's been forced back onto the track by hand, more than once, without anyone checking whether the track itself got bent doing it. Each forced reset stresses the rail a little more, and eventually the track won't hold alignment no matter how many times you reset the door. At that point it's a track replacement, not a tune-up, and it costs more than if someone had called after the first jump.
The other place it goes sideways: a homeowner assumes off-track means new door, especially after searching around and seeing replacement quotes online. At the income and build-year numbers common in Commerce City, that's rarely the right call - the hardware is current, the panel is usually intact, and a track repair costs a fraction of a full door swap.