Replying to 09 Line Blend Mounting Point

I just picked up a pair of 2009 Line Blends in 178. I am 5' 11" and 180lbs. I ski mostly on the east coast in the trees. These are going to be my powder/soft snow skis. I will not ski park too often on this ski so I do not want to go center (and don't want any tip dive issues in powder). The recommended mounting point is 78mm back from center. Does any one have any experience with mounting points on these skis? Any advice would be appreciated.