Thanks for the help. Bath sink & commode are on the street side and appear OK. That may be because they are so close to the inlet. I can't get a 1 gallon bucket in the bath sink so I really don't know what it flows. On the curb side, the kitchen sink flows .85 gpm. Shower (curb side) flows .78 gpm. I spoke to Moen tec on their hotline and he said it should flow 2-2.5 gpm. That is also what is printed on the spray head. I pulled it all apart (don't tell the dealer) and couldn't fine anything. I even flowed the kitchen sink without the spray head, it was a little better. Still, I get 15 gpm out of my hose.
I think I have it narrowed to the inlet pressure regulator. (after reading other comments from net members) Although the dealer tec said I didn't have one. Dealer tec also said I didn't have an accumulator when I asked him where it was after seeing the literature in the book. I found it today behind the convection oven. I will call Airstream tomorrow. One last thing, keep your old Airstreams! They don't build them like that anymore. I wish I could have my '88 back. Thanks again.