Most of Montclair went up around 1990, and that one number explains more about the calls we get from this neighborhood than anything else. Across the wider service area, the housing stock spans 1940 to 2015 with a median build year of 1981, and most of it clusters in that 1980s-90s wave. Montclair sits almost exactly on that line, which means a lot of what's in these garages is original - the torsion spring, the opener, sometimes even the section hardware nobody thinks to replace until it fails.
A torsion spring is rated for somewhere around 10,000 cycles, roughly seven to ten years of normal use. A house built in 1990 has had that spring cycling for well over three decades if nobody's swapped it. Same story with the openers from that era - chain-drive units with worn gears and drive systems that are past due, even if they still limp along most days. We're not saying every door in Montclair is on its last leg. We're saying the math on when things break lines up with when the neighborhood was built, and that's not a coincidence.
We don't know the layout of individual blocks here - no street-level detail for Montclair - but the build-year pattern is consistent enough to plan around.