Q: We recently bought a resale home. When we moved in, the front door took a beating. We were clumsy movers, and we dented the door in several places. The door is metal and has been faded by the sun.

A garage door that slips off track is more than just an inconvenience. It can quickly turn into a safety hazard. Misaligned rollers put stress on the entire system, leading to grinding metal, uneven ...