I have the new full tilts and I went skiing with them for the first time yesterday. When I was skiing my lower leg muscles around the calves area were hurting. It felt like the boot was putting too much pressure on them. I then skiied with the top buckle off and that felt fine. My question is what could the problem be? Is it the process of breaking a boot in? Do I need to mold it? The size is not a problem, I'm not worried about that.