Just to clarify... Was the center mark of one ski 10mm behind the other? Or were both center marks 10mm behind of what was measured as center?
Either way... Occasionally top sheets do shift during manufacturing so you should always double check before mounting.
The center point on the Antidogma is measured contact point to contact point. If you measure the entire ski tip to tail the center mark will appear to 10mm back. This is because the nose has a more "gradual" rise while the tail has a "quicker" rise.