Just bought a tt and followed a detailed PDI form. This is what I found.
Loose connection water pump
Tear small in underbelly
Some sketchy caulking in places
Scratched access panel
Loose trim
This is what I missed
Bathroom door needed adjustment to not pop open
Water channels on slide top corners were broke. This are hard to see and only visible with slides closed. Old tt didn't have them.
Fireplace broke a few days after we left.
If you go slow and take your time I don't think you need professional unless you have zero mechanical aptitude.
