Houses in this service area went up mostly between 1953 and 2014, with the median build year sitting around 1990. That one number explains most of what we see on an off-track call. A big share of the stock, especially across the 22 named areas that make up this side of town, dates to 1980s and 90s construction, when builders ran steel roller track bolted straight into wood door jambs instead of into a steel frame. Wood moves. Screws back out of it a sixteenth of an inch at a time, year after year, until one bracket finally lets go and the door walks sideways off the track on its next cycle.
Arlington sits in a moderate heat band, and that matters more than people think. A garage that bakes through summer afternoons puts real thermal cycling on galvanized track - it expands during the heat of the day and pulls back tight once things cool off at night. On track that's already loose at the jamb, that daily flex is what finally lets a roller pop free. We see it most on doors original to houses from that 1980s-90s run, because the hardware is old enough to have worked loose but the door itself is usually still sound, so the fix is track and rollers, not a full replacement.