Just to update everyone;
The old owner purchased in October of 2014, so technically the warranty is over (2 years). However, it IS indeed transferable to a 2nd owner. Have to have camper inspected by a certified dealer (not necessarily OR), and send them $250, within 15 days of purchase. I have about five days left, so I'm taking to a local dealer on Wednesday. Not sure if it will do any good encouraging them to do any work under warranty, but it's a step.
I've been emailing back and two with someone in Open Range (Thor?) support who's been advising me, and I've left voicemails for both gentlemen referenced here (service manager and service advisor). I'm still not sure if I have delamination or frame flex. As mentioned, when I did the frame flex test, it seemed to be within tolerance. Hopefully, the inspection on Wednesday will nail this down.
Any other suggestions or thoughts are welcome! Thanks for those who have advised so far!
Chuck