Most garage doors still in service in Lancaster went up around 1969, which puts them squarely in the steel-sectional era: flat or lightly embossed steel panels, single layer, no foam core, hung on steel rollers running in steel track. These are typically 16x7 or 9x7 single doors sized for a two-bay or one-bay detached garage, not the wider doors you see on newer builds. The roller itself on a door this age is almost always a 7-ball or 10-ball steel roller on a 4-inch stem, riding bare metal on bare metal with nothing but grease between them. That's the setup before you ever get to what's actually wrong with it - a door built this way wears differently than a door built in the last fifteen years, and the fix has to match the hardware that's actually on the track, not the hardware a newer door would have.