It must be something in the late summer air, we had our NXG frame fail over the Labor Day weekend. Noticed it when we arrived in Durango, CO and went to move the slide out and heard this terrible pop. I thought maybe with the uneven pad we were a little twisted so I hooked back up and releveled and the same thing.
Started looking at the frame and noticed ours was seriously tweaked. We made it home and took it to the dealership and are now waiting to see what FR will determine. We have a 2015 Wildcat 344QB.
I can't figure out how to post a picture, but once I do, I will post a couple. I do hope something works out for the OP, we as consumers should not have to go through this, purchase in good faith and we are not talking $50.00 products.