Most of the roller calls we take in Warrenville trace back to the same cause: steel rollers that came stock on doors installed when the neighborhood was built out, and never got swapped since. Warrenville's housing stock centers on 1980, which puts a lot of doors and their original hardware at 40-plus years of use. Steel rollers on stamped-steel stems were standard then, and they don't age well. The stem bends slightly, the roller wears an oval groove into itself, and the door starts binding in the track on one side before the other. That uneven drag is what eventually pulls a bracket loose or cracks a panel corner. Across the wider area we cover, housing runs from 1938 up through 2003, with most of it dating to the 1960s and 70s - Warrenville's 1980 median puts it a little newer than that broad average, but still well past the point where original rollers are doing their job. We're not guessing at the fault before we get there, but the build year tells us what to expect on the truck: stem sizing, bracket type, and whether the track itself needs straightening along with the roller swap.