Interesting that you asked about this particular model ... I just got done making several mods to one that I picked up from a friend.
I lowered the shelf by 3/4" and put a modern radius on it to help ensure a clean release. I also re-shaped the riser to eliminate the blocky appearance that the Hunter has. As Sean B has previously noted above, he didnt like the high wrist grip and this mod changes that completely.
I also narrowed the limb tips by 1/4" and picked up 8 fps by taking away that un-necessary limb mass. This reshaping did not reduce draw weight and it dampened the vibration upon release significantly.
It was a fun little project and now it really is a great shooter.