I appreciate all of the advice. I put a used tank in so it could be the sediment issue. They broke a couple of screws when moving my fuel pump to the new (used) tank so I guess it could be the pressure thing too. The problem has gotten worse now. It only gets to about a quarter of a tank when it starts to stall. I can clean the MAS. You never know. I'll probablly call my mechanic again. Hopefully we can get it going. Thanks again.