2017 Salem 27RKSS interior ?

[jello]

I've searched the site but cannot locate a post describing, or solving my phenomenon. So, I post: Two months after purchase I noticed a yellowing of the interior walls and ceilings,followed closely by darker yellow splotches of what i thought were fluid leaks. Everywhere, literally. However no fluid, or leak found. It now looks like the inside of an old western's Saloon as seen on TV. Thing is it's never been smoked in, or spat on. No fires, or crowds, no animals bigger then a bug. I was morbidly hoping to find a post that led to a manufacturing investigation revealing formaldehyde,or defective wall material installation glue from Transylvania. Any ideas? I'm stumped.

[SeaDog]

Welcome to the forum its a great place to get your questions answered. This is a guess on my part but I think it may be the adhesive leaching and causing the wall paper to turn yellow.