We stock the common torsion and extension cable sizes that cover most residential doors, along with drums, bottom brackets, and the fasteners that tend to have corroded shut on hardware this old. What we don't carry is a fabrication setup for oddball or custom-length cable - if a door turns out to need something non-standard, that's a second trip, not a same-visit fix, and we'll tell you that up front rather than pretend otherwise. Since we're driving in from Ashburn, about 19 miles out, we plan the truck load around what a house from this build era typically needs rather than restocking on the way. That's the trade-off of being a company based elsewhere: we come prepared for the job type, not for a surprise part nobody could have predicted.