I spoke with D'Alton Holder, one knowledgable guy when it comes to muskox, as I acquired some myself.
The process you will use is long, tedious, and not for the faint of heart.
first, you have to get them completely dried out...eventhough you think they are- they likely are not dry enough.
If you would like to discuss, you can call me at 678-300-2883