Welcome from south Georgia and congrats on your purchase. My youngest daughter lives in Battle Ground Wa.
Excellent advice given ref the PDI. When I picked up my new 5er this past August I spent almost three hours going over everything. Owned a Cougar travel trailer prior to the 5er.
After all that time spent going over what I thought was everything, couple days after I got home I discovered one of the storage door latches would not lock the door.
This door was to the convience center and only had one latch. No worries, I adjusted it and it now locks.
Point is you may miss something, but just take your time. Good luck and safe travels to you.
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Dan (USAF Retired)
2021 Cougar 290RLS w the Andersen Ultimate
2022 Ram 3500 SRW Big Horn Mega Cab
6.7L I6 CTD with Air Suspension
6 Speed Automatic 68RFE Transmission