It seems the occupation for all roller derby girls is a constant search to make your skates fit right and work well. I feel your pain. Of late I am thinking about my heels, which don't fit very well in my skate and are always coming up off the footbed when I skate. This seems like a bad thing. A couple of solutions I have found (but not yet tried):
Powerslide ankle stabilizers:
(available from several places including Connie's Skate Place)
The DIY beer-solves-all-problems solution:
originally posted on the SkateLog Forum.
Perhaps a combination of the two?
Anybody else out there found other solutions?