I was reading through some threads on rv.net and they were talking about the siding flexing and pulling away from the infrastructure due to wind etc... I also notice the sticker on my 27dbud, to check the seals every 90 days.
What should I be looking for? Are the seals chaulked?
That most likely means to check the slide seals, doors, windows etc. you should reseal the roof if that sealant is old around the vents, ac, antenna, etc.