The risers are cut the same under the grip on the Pro and the other risers except Stalkers and pkgs. and Rascals. The grips should also be the same with the exception of the Pro grips have a little longer side on them at the top of the grip. I just went and looked at my grips which I have all three they offer (rosewood,maple and laminated) and the configuration looks the same to me. Maybe it just felt different to you than your Mighty Mite does...