To have a comprehensive discussion, it would help to know:
1. Where is it biting? Front, back, inside, outside... ?
2. What model skate?
3. If your foot is in the air, and you point it as far as you can, does it bite?
4. How about if you do the opposite (flex it as far as you can)?
(My belief is that the answer to 3 and 4 should be no, if the boot fits properly. There are things you can do.)
5. If you pronate or supinate (i.e., bend your ankle sideways a bit), does it bite?
6. What type of liner does your boot have? I.E., is it just leather, nice soft fleece...?
7. What thickness of socks are you wearing - none, thin liner, ordinary, thick? I have recently moved to having more space inside my boots (we can discuss this if you don't know how), and wearing thick fuzzy ski socks - the opposite of what I used to think was right. I love the way it feels! But I'm not sure that would work if you are doing high level jumps.
8. How tight does your boot feel in general?