this is the most uneducated response I've ever read, so let me give it to you straight, i work at a shop and have for 6 years and am a certified tech for pretty much every binding manufacturer out there...
the chronics are a directional twin tip, which means the mounting plate is set back, and the nose is wider than the tail. the chronics also only have one mounting location, which is core center. now, core center DOES NOT mean that it is the dead center of the ski. It is the thickest part of the core of the ski hence, core center. in order for you to get the maximum amount of performance out of the ski, stay at the factory recommended mounting location. if you try and go dead center, you risk drilling past the mounting plate and stripping your screws.
hope this helps