Help with grip

This might better be under equipment, but I have an issue with my Pardini moving in my hand. I did nit have this issue with the benelli or at least not to this extent.  It doesn't happen in slowfire and I can control it in timed but it really seems to jump around in rapid an dive hot shots that are off call. I pulled out the flex shaft last night and tried to get it better into my hand, but it almost feels like it's twisting in rapid fire. 

Am I making any sense to anyone?

During slow fire, recover, come back on target before you lower the gun.  Do this every time you slow fire a round to reinforce muscle memory in your grip, arm and stance.  You are looking for consistent recovery and muscle memory as you get back on target.

The area below the palm of my hand was not making contact with the grip and neither was the ridge below my ring and pinky fingers. I added some wood putty last night and the results on my 45 angle grip were really good at 50 and 25.