The fault we see most in Finley is a set of steel rollers that have worn their stems down to where the wheel wobbles in the track, usually paired with a grinding or popping sound every time the door opens. It's not random. Finley's housing stock centers on 1983 construction, which means a lot of these doors are still running the original hardware from the builder, or a first-generation replacement from sometime in the 90s. Steel rollers without bearings just don't last forty years of daily cycling. On top of the age factor, this area sits in a cold-moderate climate band, and that temperature swing matters for rollers more than people expect. Steel rollers get noisy and stiff when it's cold. Nylon rollers, if they were swapped in later without the sealed bearing upgrade, can crack and chip in the same cold snaps. Either way, the failure mode in Finley tends to be gradual noise and wobble building for months before a roller finally jumps the track or seizes outright, rather than a sudden snap like you'd get with a spring.