A torsion spring under tension is not a project for a Saturday afternoon and a YouTube tab - it's wound to lift a 150-plus pound door, and if it lets go while you're working on it, it does real damage to a hand or a face. We'll say that plainly every time, no matter what town we're writing this for. What you can check yourself before calling anyone: whether the tracks are visibly bent, whether the rollers are cracked plastic versus metal, and whether the door reverses when it hits something on the way down (it should, every time, and if it doesn't, stop using the opener until someone looks at it). On homes in this part of the service area, built mostly after 1990, the opener itself is more often the failure point than old mechanical gearing - circuit boards, logic boards, and sensor alignment cause more no-go calls than a stripped gear does. That's a job for someone who works on these units regularly, not a trial-and-error afternoon.