I need to ask several questions first:
1. Has there been any recent maintenance on the machine, especially the blast hose or nozzle?
2. Are you running a full saturation curve (i.e. 4 strips and solver)?
2. Is the air pressure OK? Has the regulator been certified recently?
3. Has there been any change in media (i.e. different supplier, different hardness)?
4. Is your "error" actually 0.003 inch (did you leave off a zero)?
5. Did the change occur gradually over the past two weeks or all of a sudden it was off by 0.003"?
6. Have you checked the Almen holder flatness?
7. What is your target intensity?
8. Were you able to achieve this intensity for a long time?
Answers to these questions might lead us to a solution.
