I really wish Sideshow had made the Anakin head itself removable from the helmet jaw, instead of gluing it into place.
That way it could be repainted or customized if desired, or replaced with a custom Shaw sculpt, etc. It would also allowed a view of the entire mask from the inside, upper and lower halves, to get a full view of 'what Vader sees' from his perspective.
It also would allow the owner to glue the little breathing tubes into place if they're loose or fall off.
As it is now, I'm afraid to even try to remove the head, for fear of breaking something. I'm NOT going to even attempt to glue on the little breathing tube myself, because it would be very easy to get super glue everywhere, and ruin the whole piece. I mean, there's NO way to access that tiny, cramped little space where the tube should be glued on, between the cheek and mask jaw. Therefor, the only solution is a full replacement. It's a shame...