Replying to Mounting stls?

im gonna mount my stl's today and im thinking ill just do true center unless theres any reason not to, im gonna use them like 85% for park, and the rest for like groomers and stuff, but i really dont care how well they do there. and this guy at my local shop sayed that there is something in the ski that makes mounting 4frnt bindings better or something like that, i dont know if thats true cause ive never heard of it, but if it is true will it effect my bindings at all? thanks.