Weatherstripping, lubricating rollers and hinges, tightening loose bolts on the track brackets - all of that is fair game to do yourself, and it's cheap insurance against the cold-weather binding common on older doors. Torsion springs are not a DIY job. They're under enough tension to break a hand or worse, and on a 1957-era single door the spring size is often nonstandard enough that guessing wrong makes the door worse, not better. If your opener is the original mechanism from decades back, replacing the logic board yourself is possible but parts for older units can be hard to source, and at some point a new opener costs less than chasing down obsolete parts. Know the line: routine maintenance, yes; anything involving the spring, cable, or opener's internal wiring, call it in.