I have been riding on Armada AR6 and Armada T-Hall for the past years
And I had both skis 100% center mounted. and the worked fine for me.
If you aren't going to do 100% center, I would do like T-hall and mount -1.5...
For the dude who mounted his AR7's center. Don't get them remounted, your going to do more harm than good for the ski. I Just got a pair of AR7's mounted dead center. My buddy rode center mounted AR7's this summer at windells, said he loved em.