Hole on the tube plate, how to solve? Seek help！

I would like to ask you a God, in the process of the design of the tubesheet (in the tube plate hole asymmetry), due to the existence of wrong view representation, lead the workers will be processed on the tube plate hole drill bit wrong (processing 5mm, discover), ask how to solve in order to avoid the loss or loss will decrease?? The tube plate is S32168 forgings with a thickness of about 300mm