We have been fighting this issue too. Our 2019 Quantum had ripples in front of the fridge when we bought it new. We took it in for warranty, they said we had to take it to a place that could hyper extend the slide out. We took it to a place that could do it, they said it was fixed and when we went to get it it wasn’t fixed. They said Thor only approved 3 hours for the repair but they would make it work out. They called and asked if we would be OK if they cut the floor at the bathroom and put in a seem. We OKed it and later picked it up. The ripples are gone however we have a seem with molding over it (doesn’t look bad) but also have a long axial cut in the floor which now fish mouths. It has been glued down a few times to no avail.
Turns out the sub flooring is mushy and glue won’t stick to it.
Given our experience, I recommend throwing a rug over the rippled area and to not torture yourself.
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