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We get the odd noise once in a great while - perhaps a perfect situation of motion and frame flex combined with thermal change. If your noise is very sporadic, maybe not worth worrying about. If it is a really loud noise, then it deserves more investigation.
We haven't yet, in nearly 6k miles. Ours is also a 2012 Tour, with the JD floorplan. I've been lurking here for a long time, reading the trouble posts, but I have to say (knocking on wood now) that ours has been relatively trouble-free.
We have a 2010 Tour 42AD and had a similar sound from our passenger slide at first. We had the slide adjusted and a couple of the slide rollers were replaced. This completely solved the noise and the slide has worked great ever since.