Ok so I was doing a bit more research last night on this and as I suspected the Chopper has a convex base so that the edges are lifted off the snow making it easier to ;ear to ride. So for kicks I took a steel ruler to check the base of the Capita and it actually is convex in some areas (bindings pulling the base up maybe?), having beveled the edges they are now slightly up (very slightly) but not anything like the Chopper.
So this transition isn't going to be easy no matter what I think...do I just take away the chopper and tell him to deal with the Capita? I had ordered the K2 Vandal which says it has a 3* base bevel which I am assuming is similar to the Chopper but it hasn't arrived yet (according to order status it hasn't even shipped yet