Harden dried fat|Tanning|Forum|Taxidermy Talk

I got this coyote cape (different coyote from the last one I posted about) that I received salted and dried.  The guy I got it from didn’t do a good job fleshing it and it has quite a bit of fat on it. The fat is hard like severe freezer burn.  I have tried soaking it in a dehydrating bath and, later in a pickle bath for days and this fat does not seem to want to soften up enough to flesh.  What else can I try to get this guy to the point where I can shave it without cutting it to pieces (done that already in a couple spots)? 

Vic