This isn't a generic wear-and-tear story. It's specific to what's sitting in driveways and garages across this part of Florida right now. A door and opener installed when a house was built in the early 1980s is pushing four decades of salt-laden, humid air cycling through an unsealed garage. That combination - mild temperate conditions that never force a full winter shutdown, paired with housing stock that's old enough to have outlived its original hardware but young enough that owners assume it's fine - is exactly why installation calls cluster the way they do here rather than spiking after one bad storm.
The fix isn't just a new door. It's matching new hardware to an opening that was built to an older spec, in a climate that's been quietly working on the steel and the seals for thirty-plus years. Skip that step and the new door inherits the same problems the old one had, just with a fresh coat of paint.