I have a 2004 motorhome which I got last year. Has been running great so far for us. I just noticed today that when I raised the 2 main blackout blinds on each side, they were damp to the touch - not dripping wet, but notably moist. One was worse than the other. It's stored outside with no cover on it. I haven't had a dehumidifier running. Just wondering has anyone else had this problem? Could it be just condensation, or signs of a more sinister damp problem? There's no other discoloration, or softness/sponginess on the inside walls.