I'm still relatively new to the Class A scene. After about 4,000 miles on the road, I'm starting to wonder if the crazy loud wind noise around the windshield is normal. It is really loud on both sides...
I can not speak directly about the noise in your unit. My ACE (and others) the wind noise was coming from the front grill. The way Thor configured it aloud for the noise. They (Thor) had to send out replace grill screens which stopped the noise. I also get a noise when it rains. Some of the strangest things go on with MH. I would check with the folks at the Winnebago forums.