FYI if you head mold the liners or rode them 5 times that 1 to 3mm's wouldn't hurt you. Its good to have a boot that hurts your foot for the first couple days.
I never heated them up. I got some burton moto's today for my bindings and I like them much better and will probably mold them. I rode in the bodegas for 20-25 hours (2 trips). And each time they did the same thing. I could board in them and it wouldn't hurt (thrill of the ride). But when I would just stand I could feel the very tip of my big toes aching and when I would walk it would rub just the very tip of my toe.
Thanks for the tip though as I've already planned to mold the new boots. They are 11's instead of 10.5. I should have just got boots from the shop instead of the great deal online. Owell, lesson learned and I've got new boots that feel great.