That weird hum from my building's lift changed how I view alignment
I was helping a friend tidy up their place and the elevator kept making this soft buzzing sound. We pulled the car up and saw the guide rails had shifted a tiny bit over time. It hit me that even slight misalignment can cause major problems down the road. I used a level and some shims to straighten it out, and the noise totally stopped. Now I double check rail specs on every job, no matter how small. It's crazy how a simple home fix can remind you of the basics. Always pays to listen to your equipment, lol.