The most common failure we find on Peachtree Corners doors from the late 1980s is a torsion spring that's been replaced once already with the wrong size - a quick fix from years back that's been grinding the opener harder than it should ever since. Second most common is a jamb that's rotted at the base from years of water runoff pooling at the slab edge, which won't hold a new track bracket without repair first.
We also see openers original to the house still running, which sounds like a win until you realize they have no auto-reverse safety sensor retrofit and no battery backup - a real issue if the power drops during a storm and the car's stuck inside. A full install gives us the chance to fix all three at once: right-sized springs, a repaired or reinforced jamb, and a current-code opener. One honest limit: if the jamb is rotted past the point a repair holds, that's carpentry work outside what we do on an install call, and we'll say so rather than bolt a new track to wood that won't hold it.