The center of sidecut on those skis is 85mm back from running length center. You can and should ski those skis forward of that point. I would suggest going forward 40-50mm which would put you .5 to 1 inch back from running length center.
I would definitely not suggest going true center as the narrowest point of the sidecut is so far back and the performance of the skis would suck except when in the air or on a rail...but I guess if that's all you do.
Hopefully that helps.
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