For a Merrydale call we load torsion springs in the sizes that matched 1970s-era doors, since that's still a chunk of what's standing in this part of town, along with the more common current sizes for anything replaced since. We carry both old-style extension cables and the torsion cable most houses switched to later, plus a handful of rollers in nylon and steel - nylon if the owner wants quiet, steel if the door's heavy and the budget says fix it once. Openers ride along too, mid-range units with the safety reversal that older houses here were never built with, for when a repair isn't the honest answer anymore. What we don't carry is custom millwork - if a door's wood panel is split or warped beyond a patch, that's a special-order part, and we'll tell you the lead time on the phone rather than promise a same-day fix we can't deliver.