I recently replaced my garage door opener and discovered my springs had lost a bit of tension and caused the door to be a bit heavy. I bought the right steel rods, watched a few videos and adjusted the springs to spec on my own. A pro could've done it 10x faster and with more confidence than me, but I enjoy learning new skills.

I'm planning to order replacement springs for both my garage doors. I'll probably end up replacing the old ones whenever I have the time--before they break--because stuff like that never happens at a convenient time!