I am 16 years old 6" 7' 300lbs and have size 17 feet. I am a fairly advanced skier, comfortable on blacks and i can do double blacks. Anyways, I bought a pair of Technica Mega 12s a couple of years ago size 325 and they dont fit anymore. I like to ski every condition fast. I would like to know if anyone makes a big boot besides companies like Strolz? Or, is there anything i could do to make mine big enough to fit me. I think they would fit if they were just a little bigger in the foot, but I also have really big calves and they don't fit in the boot if my foot is all the way in.