Replying to Heel lift...

Anybody know how to stop it from happening? I have fairy large calves, wide feet, but my heel is really narrow. I have the intuition liners, but i dont think i can heat mold around the feet. but im not sure. Im looking at trading them for or buying a pair of full tilts. They dont have as wide of a last, but it fits comfy, and i dont get heel lift. Does anyone know how to fix it? i have some offers on my boots, but i will only sell em if thats my only option.