I looked all over the internet for this answer and came up with so many different results. I mounted my Blends -2 back from center. I was never really happy with this setup, but I stuck to it.
Recently, I decided to just go for it and remounted them to center. I rode them today and couldn't be happier. I finally felt "one with the ski." My skis finally feel like they really can do everything now. I took them on soft snow, made fast carves, spun onto/off of features and was left with a big smile on my face.
This may not be for everyone, but it works for me.