Given how much of Richfield's garage hardware still traces back to a 1959-era build, we carry torsion springs in the common residential sizes along with extension spring sets, since both show up depending on when a given door was last replaced. We stock standard lift cables, nylon and steel rollers, and center and end bearing plates - the small parts that wear out quietly for years before they snap. We also carry universal opener logic boards and drive gears, which cover most failures on openers that are old enough to predate the safety-sensor requirements added to newer units. What we don't stock is anything custom - a door cut to a nonstandard width or a spring wound to a spec outside the common residential range. Those we order in, and that can mean a wait of a few days rather than same-visit service. We'd rather tell you that up front than pretend every part is on the truck.