Get a smaller size if possible. As a bootfitter, I know it's worlds easier to make a boot bigger than it is to take up room. Boots should almost feel too snug at first, they only get bigger as they pack out.

Sounds like there to big for you, your heels sould never move around like that and the problem will get worse as your liners pack out. you could take them to a boot fitter and see what he could do with some custom soles, otherwise can you exchange them for a smaller size?If you don't have a custom footbed you really can't say if the boot fits or not. A footbed really should take up the space and lock your heel in place. My bro got these footbeds and said they worked well in his alpine boots.http://www.rei.com/product/721632If you have the money I would go to Surefoot or a boot fitter that knows how to make custom footbeds. Footbeds can move from boot to boot so if these boots still don't work the footbed will transfer to the new boot.