AC issues/questions for my class "A"

Thank you all for the help and suggestions. We have to have some type of a vacuum out of the MH while moving. Like I mentioned, when stopped it works great. I will say I haven't shut all ceiling AC vents down but one. All roof vents are closed while travelling. When we return home I'll give it a try next month. As far as the dash air it has been awful since I bought this rig 5 years ago. Never cold. Had it looked at when still under warranty and of course it checked out fine. It did come out of the proper vents though.

Gotta love RVing. Something breaks, every, single, solitary time I take this thing out.

Thanks again

Bob