Tanque Verde's housing stock sits close to the region's overall median build year of 1986, which means the springs, rollers, and drums we pull off doors out here are almost always sized for that same generation of door: heavier steel sections, older torsion bar diameters, and hardware that isn't what's sold off the shelf at a big box store today.
We carry common spring sizes and rollers for that era on the truck because we see the pattern often enough across this part of the service area. What we don't stock is anything specialty - custom wood doors, discontinued opener control boards, or odd panel widths from short production runs. If a job needs one of those, we're honest about it taking longer, because ordering a part nobody keeps on a shelf isn't something we can rush.
That's the one limitation worth saying plainly: same-day is realistic for a standard torsion spring or roller job, not for a part that has to come from a manufacturer we don't have a local source for.