i managed to get a roadkill squirrel in good condition and decided to try my hand in preserving the pelt. I fleshed it, put it in a pickling solution for 24 hours then in an alum tanning solution for 24 hours and then let it dry for over a week. i’ve been checking on it and trying to soften it out on a table edge it seems to be working but the flesh side is VERY oily. is this an issue? what should I do to fix this?