If you do not have one go to this link and pull one of the PDI check sheets. PDI = Pre-Delivery Inspection.
I used this one.
It is suggest that you give your dealer a copy of the PDI you are going to use in advance so they know what is coming.
Plan on taking all 8 hours to do this. Do not rush it.
When doing your PDI and find problems take pictures of the problem.
You want to see all items work water faucets, both 110 and 12 lights. to include the dump valves.
so ask them for a full hookup location to go through the PDI.
One last comment. If you have a large list of problems off your PDI or a major one. I have heard the concept of holding back your down payment when paying off your unit until the problems are corrected. This is known to help motivate them to fix the problems.
Good luck and let us know how things work out. Congratulations on your new unit.