For the extension-spring hardware common on Damascus's older stock, we carry replacement extension springs rated for the lift weight on standard single and double doors, steel and nylon rollers to replace the worn originals, and safety cables - which a lot of these older setups never had installed, and which keep a broken spring from becoming a projectile. We also stock standard track hardware and fasteners sized for the lighter gauge track that shipped on doors from this period, since newer heavy-duty brackets don't always bolt up the same. One honest limitation: if your opener itself is original to a 1978 build, we don't stock obsolete drive gears or circuit boards for motors that old - at that point replacement is the only real option, and we'll tell you that on the spot rather than quote a repair that won't hold.