Lenoir City sits in the same cold-moderate climate band as the rest of the area we cover, which means freeze-thaw cycles through winter that swell and shrink the wood jambs these older brackets are bolted into. Over forty-plus years, that cycle works lag screws loose a fraction at a time until a bracket that looks fine actually has play in it. Combine that with roller stems that have worn their track channel into an oval rather than a true circle, and you get a door that's one hard open away from jumping. With around 4,340 households in Lenoir City and a housing stock concentrated in that same early-1980s window, this isn't a one-house problem - it's a pattern tied to when the neighborhood was built and what hardware was standard then. The fix isn't exotic, but it has to match the door's actual age, not a generic modern spec.