Hand Grab Tracking

Hey Folks, 

I am designing a circular weapon(image is attached below) that can be hold by the player with two hand. When the player squeezes the weapon with both hands, it shoots. It is functioning well, but I am encountering an issue. I am using the two hand grab free transform hand grab component provided by the Meta SDK, and when the player performs a quick operation with the weapon, it rotates on the horizontal axis. Any help would be appreciated.