How to adjust DIN on my ATOMIC 412 bindings?

As I stated yesterday the shop is your best bet, ask for the owner and the manager and talk to them. To adjust the forward pressure, the heel piece must be moved until the the distance is correct for the boot length. Atomic is a little different than Tyrolia and Salomon and Marker, they forward adjustment is set by moving the heel until the screw is where it should be. I'm not current on the method for Atomic, maybe you can find a rep who is. As a last resort the try it with a screwdriver until you are happy, you are risking a leg injury if you do it wrong. That's the best I can advise on it.