Here is the list that is a sticky on this forum.
http://www.keystoneforums.com/forums...ead.php?t=5129
If you do a search on Google for PDI, you will find a lot of others as well. You may find things or you may not. A lot depends on if the dealer has already done their due diligence and checked out the trailer when it came to them.
Plan on spending some time before you sign the paperwork. Either have the dealer fix what they can while you are signing or have them note it and make an appointment to bring it back after camping season is over. Make sure they show you how to operate everything. They should operate all of the systems to prove that they are in working order and to show you how to operate them. Make notes. Some have even videoed the process to refer back to later.
Good luck.