Synchronized spring failure timing
Torsion springs rated for a certain cycle count reach the end of that count around the same age across the neighborhood, so it's common to get calls from streets close together within the same season. Rollers wear and start binding in the track, especially with the mild year-round climate here doing less to age the door skin than a harsher freeze-thaw region would, but doing nothing to slow spring fatigue or bearing wear.

