A torsion spring holds real tension and it doesn't care how old the door is - that part of the job isn't a DIY call anywhere, Lynnville included. What's different here is the cold-moderate climate band this part of Tennessee sits in: steel fatigues faster with freeze-thaw cycling, and a spring on a door built in 1938 has had a lot more winters to work through than one on a 1995 install. If you're hearing a loud bang from the garage and the door won't move, that's very likely a broken spring, and the safe move is to leave the door down, unplug the opener, and call rather than try to wind or unwind anything yourself. Replacing rollers, tightening loose hardware, or lubricating a track is reasonable homeowner work. Spring replacement, cable work, and anything involving the torsion bar over the door is not, regardless of how handy you are - the stored energy in a wound spring has put people in the hospital.