Thanks for your comments, Jamie. I will talk with our engineer about them. He is a young fellow who is very conscientious, but limited in experience. I have been a QA manager in the PC business for barely 1.5 years. Since my first note, I have learned that we are having problems with dry film adhesion, it is stripped off and reapplied if anything goes wrong, so problems are hidden, to some extent. I have noticed that IPC-SM-839 has some discussion of adhesion promoters, along with cleaning of boards before mask application. Lou Hart, Compunetics, Monroeville, PA