Replying to Are my liners packed out? FT Dropkicks

So ive had FT dropkicks for about 3 seasons now and they have always fit me really well until this season I started getting heel lift. No matter how tight i buckle them my foot still is able to slide up a little bit. Lately I have been putting each buckle on the max setting which helps a little bit but doesn't solve the issue. I cant afford new boots right now and would really like to try and fix this problem (if its possible). My only guess to why this is happening is that my liners are packed out.