Salmon Creek's housing stock sits around a median build year of 1988, a bit ahead of the 1994 median across the wider service area, and that gap matters for rollers. Doors from the late 1980s were more likely to ship with plain steel rollers riding in galvanized track, no nylon, no sealed bearing. Steel-on-steel wears a groove into the track over twenty-plus years, and once that groove is there, a straight roller swap won't quiet the door - the track has to come out too.
We pull the old rollers, check the track for that wear pattern, and replace rollers one side at a time so the door never comes fully off its hardware. If the track shows scoring deep enough to catch a fingernail, we tell you before we close it up - swapping rollers into a grooved track just buys you a few quiet months before the noise comes back.
Most jobs here are nylon rollers with sealed bearings going in where steel came out. They run quieter and don't need the oiling the old steel ones did. We're not guessing at what's behind the panel - the era of the house tells us most of what we need to know before the truck even unloads.