Another welcome to you Larry. A Forums member has found a valuable resource in an RV tech in your area. This person used to work at Fogdall's. He evidently knows Airstreams very well. He might help if you get in a bind. I know I did -- I had my strong points but met my, um, Waterloo on some furnace and hot water issues. I have asked her to look in on this thread.
[on edit:] I found it. Take a look here: http://www.airforums.com/forums/95742-post8.html
Elizabeth? Anything more to add? Thanks to all!