Otsego's housing stock is unusually concentrated around one construction window - most of it went in during the mid-2000s push, with a median build year around 2007. That matters because it means a large share of garage doors in this town are hitting roller end-of-life at roughly the same time, rather than the staggered mix you'd see in a town with a longer construction history.
Minnesota's cold band makes it worse. Nylon rollers get brittle in sustained cold, and the original builder-grade rollers on these doors were never the sealed-bearing kind - they were the cheapest spec that passed inspection at the time. Eighteen winters of that combination is enough to turn a smooth-running door into a grinding one, even on a house that's otherwise been well maintained.
We don't push full door replacement when it's just the rollers - that's an easy repair, not a reason to buy a new door. But if the track's worn from years of a failing roller riding in the same groove, rollers alone won't quiet the door back down.