Replying to Using a smaller liner

so i have a relatively new pair of boots and the liners have been packing out a little more than i anticipated, hence my heels are starting to move around a lot more then i want. i probably have about 15-20 good long days on my boots so far so im sure they will pack out even more.... i'm going to try a pair of a-line foot beds and see how those fair, but i have also been toying around with the idea of using a smaller pair of intuition liners in my boot.... i would use the correct size but my shop has a pair of 27's that i can get for super cheap and i thought about the possibility of this solving my heel lift problem... im using a pair of dalbello krypton kross' size 28.... let me know what you guys think, thanks in advance for your input