Tract-built spring and opener wear
They're about tract-built torsion springs and chain-drive openers from the early 2000s hitting the end of their rated cycle count around the same time, because whole streets here went up within a few years of each other. We see a lot of worn rollers on steel sectional doors, openers with circuit boards that have baked in a garage all summer, and the occasional cable that's frayed from years of heat-cycling rather than age alone.

