I am a full timer in my new Forest River Salem Le 36ft. I have tarry black substance coming out of my bedroom ceiling and out of bathroom wall and light fixtures. The manufacturer rep want talk to me. I have left several messages. The dealership came down and took pictures and a sample of tarry stuff. He says he is having trouble getting rep to talk to him. I want them to test this yuk and see what it is. The dealership says it is condensate. I don't think so.I am concerned this might be harmful to us. read full review »