Replying to Faction CT 2.0 vs. 3.0

Want the 2.0 for waist width because I ride Midwest with the occasional out west trip. Love skis around 100 waist. I want the 3.0 because they aren't symmetrical and I could mount them back a little but I'm afraid the 3.0 are too wide for where I ski. Have always mounted a little back from center on skis that were not symmetrical and have never had problems skiing switch. I'm not sold on the 2.0 idea of a center mounted symmetrical all mountain ski. Would it be a bad idea to mount like 2cm back?