hey I mounted mine at 2.5cm ahead of the midsole mark. Most the Armada team rides them there, but tanner goes +5. I ski all over , riding switch quite a bit. I think +5 is unneccesary, for me anyways. The midsole mark is the centre of the sidecut of the ski, so the more you move your mount position ahead, the more performance you lose skiing forwards, especially on the harder snow. I think i would've been fine having them mounted at mid, but i like the little bit of extra tail for switch landings