For a maintenance call in this part of our territory, the truck carries what a 1960s-through-90s mixed housing stock actually needs: torsion and extension springs in the common residential weights, safety cables, roller sets in both nylon and steel, hinge and bracket hardware, and lubricant rated for the cold-moderate swings this area sees rather than a one-size product. We also carry basic opener sensor and wiring parts, since a door that's out of balance will eventually take the opener's safety sensors down with it.
What we don't stock is every discontinued bracket style that a genuinely original 1962 door might use - some of that hardware is regional-specialty or long out of production, and if we find it during a visit, we'll tell you what the special-order path looks like rather than fabricate a fix.
Because the drive from Tukwila is short, we can carry a fuller set of stock rather than paring the truck down for a long haul, which means most balance, cable, and roller work gets handled in one visit instead of a return trip.