Just had our 96 Elddis wisp serviced for 1st time .(we're newbies) and were Gutted.....!
It's got 60% damp to front end near windows. It's such a lovely little van with no smells , no soft walls, no sign at all of water ingress.
Gutted.......
i wouldn't worry about it to much .sometimes imho these things are over exaggerated ,if it looks o.k ,feels o.k just use it and enjoy it ,its far better to leave well alone than risk a bodged repair if your not up to it .
i no how you feel, we bought an elddis odyssey 524 2 years ago from a dealer, and found out 3 weeks ago that the rear offside corner had rotted away, so i have nothing 2 lose so im having a go at fixing. try a de humidifier for 2 weeks the test again, might give you a better idea of the damp prob,