Don't take this the wrong way but you are shooting a Mathews.

Mathews grips are not exactly a torque free design for 95% of the bow shooting public. The new grips on the switchback and outback are better than past grips but they are still a generally torquy grip.

A torque free grip will be essentially straight and narrow. It won't have any of those palm swells, thumb grooves and such that the Mathews grip has machined into it. This will allow your hand to make contact with the entire grip as close to the grips center line as possible. A Mathews grip, and many others, apply pressure in all areas of the grip except the very center.