Thank you.Nice critters AT, beautiful taxi work as usual!
I've only mounted two Pronghorns [mine and my Grandsons] Hardest Mammals I ever mounted.
Yes, they are difficult. After mounting a handful of them I've finally got it to where it's not as aggravating. I started doing a short-ish Y incision too. Attaching the skull plate and horns permanently, doing clay work, then cutting the head off. Then sliding skin on, reattaching the head and doing the rest of it.
That has greatly helped me getting the skin taxied correctly and not having to sew as much in those pesky capes.
Here is a picture on how I cut part of the head off so I can do a short Y. Even the ones I get that are cut all the way down the back, I sew up before mounting now.
On this one I attached a wood block for extra support.
Next one you kill give this a try. It is a game changer for me.