All I did was create a palm swell on a gripless gun. No more, no less, the proof will be in the shooting. I used the masking tape to see if it corrected my grip and then used the Talon grip material for the palm swell. I put different grips on my 642 when I wanted a covered backstrap so it would fit my hand better. Same thing. Changing your grips to fit your hand is a common thing to do. I'm through defending it.