Spend a night or two close to the dealer and have a shakedown camping trip. This lets you try out all the features of your new Columbus over a much longer period of time than a typical 2-3 hour pdi. Things will go wrong and you will find minor items needing repair. Hopefully nothing major needs repair. Doing this close to selling dealer lets you go back and take care of warranty items before you travel too far away.
I got a lot of PDI checklists (even an iphone app) and been customizing.
Of course I would annotate any issues found, but are any of them grounds for re-negotiating the sale price? (I haven't signed the dotted line yet)
For instance there are scratches or defects found that I'm willing to live with and don't really justify the effort to fix. Even minor issues took a long time to fix because of the wait to get the parts on my Jayco.
We've picked up our 2014 Columbus 320RS and are looking forward to many lengthy trips. Our goal is to tour the US and see as many National Parks as we can. Along the way, we're excited to see other wonders that make this land so awesome. The best part will be all the new friends we will make along the way. Happy camping to everyone out there!