A customer has asked us to move a flange .007" to meet a perpendicularity requirement and save a costly error. I do not have much experience with moving dimensions using a peening process but can anyone offer any suggestions on how to proceed with my setup. Nozzle orientation? Nozzle Angles? etc...

I am concerned that the intensity level needed to move this flange will be much higher than the drawing requirement of .010-.012N w/S70 shot in that area after machining. Is it even possible to move this flange without casing serious damage to the integrity of this part?