You are right, it should be much cooler on 110AC.
I believe I would have to take it back to your Airstream Dealer. From your previous posts I see that you have a 2003 model. I would get this fixed under warranty.
Just my .02 cents.
-"You want to make it two inches - or, if you're working in centimeters, make sure it's enough centimeters for two inches."-Red Green