In reply to GirlieEyes:
The fit of G14's changes dramatically when used as a mono point.
When I bought mine I took my boots to the shop and they fit perfectly. This was with the crampons set as duo points. It was only later after a couple of routes when I realised that the boot sat on the front differently as a mono point due to the point sitting further forward.
My boots were Scarpa Freney GTX.
Not sure how this affects the back of the crampon though.
I set mine up so that I am nearly snapping the rear bail to clip it into the rand!
Andy