Hello Deb and welcome to the Forums! (as if the rest of the internet didn't matter ... !)
Window problems? There is a normal issue of gasket replacement. Double pane front windows were tried for a short period; seals failed and 'green water' spontaneously appeared through the seasons. Dealing with such enchantments is the normal lot of favored Airstream owners.
Why don't you tell us more? Many issues have been covered here and you may get steered to some reasonable information. No promises now; you do know what you paid for this service ....
Really though, I've rarely seen a larger, more capable group in which somebody will have shared the problems you face.