Dalton wrote an answer about Black Diamond AMPerage Ski on February 29, 2012
It's centred enough for me, but I don't think it's true dead centre and I don't think it's intended to be skied that way either like a twin tip might.
When mounting I reviewed:
Finally decided to go with something in between Blister Gear Review and the BD Pro's mounting points. So far so good (again, disclaimer: works for me!)