The job goes sideways in a few predictable ways. First, someone tries to push the door back up manually before calling, and the attempt bends the vertical track further, turning a bracket adjustment into a full track replacement. Second, the spring is still fully wound when the door jumped the track, and a tech has to treat that as a loaded-spring job before touching the track at all - skip that step and the door can drop hard. Third, and this is specific to the age of house common in Burien: track brackets from the 1960s and 70s were often fastened straight into framing that's shifted slightly over the decades, so a track that looks straight is actually mounted a few degrees off true, and bolting a new roller into the old alignment just reproduces the same jump a few months later. We re-check bracket alignment on these houses rather than assume the original mounting was square, because on a house this age, it often isn't anymore.