Newbie- we bought a lemon! Delamination issues

If you live anywhere near a marine facility....ask to borrow a Moisture meter used on boat hulls. It is a small hand held device that will give you moisture reading as you hold it on fiberglass sidewalls. This device helped us to unload a NEW Jayco hybrid that had delam. Also prevented us from buying a used fifth wheel with severe sidewall delam. So sorry, I would push to "sell it back" to dealership.