Good call on the annual crawl-around. A few extra tips from experience: - Check the ledger board connection to your house—this is a sneaky spot for m...

20 years is impressive, but honestly, it's not unheard of if the unit was sized correctly and maintained regularly. A few things probably helped you o...

Good points on leveling compound—seen similar issues myself. Couple things I'd add from experience: - Even minor unevenness can mess with large-forma...