Replying to Boot predicament

Hey guys so 2 years ago I bought a pair of atomic boots. When I first bought them they were a nice snug fit and cheap so I thought "hey these are comfy and fit nice and tight why not buy them!" Well... They were good for the first few months then I started having issues... It seemed as though the liner expanded a lot from a few uses... Although I never got shin bang the was a lot of heel lift going on. Last year I got the liners molded and then custom foot beds tossed in but once again after a few weeks they were back to having a decent amount of heel lift... So What should I do? Is it worth putting more money into trying to get these to work or am I better off buying new boots? (I saw FT's at my shop for 350 so that would be my top choice. Oh and I would make sure I'd get properly fitted this time)