Replying to Where should I mount my Shreditor 112's?

They just came in the mail today and I will be using them as my new powder/all mountain ski. Since there is only 3 or 4 pow days per year where I live, I won't actually be using them in powder all that much. I might swing some park laps on them (probably will stay off rails to keep the edges intact), but i'll be jibbing around a lot and hitting lots of jumps. They were mounted once already at -1.5cm, so I am wondering if I should mount them center, or at -1 or -2?