Is it a hindrance to my game if I hold the racquet with the butt of the handle in the middle of my palm. In other words, I do not hold the racquet with the butt all the way back touching the heel of my hand. This grip style is really loose and helps me to impart spin. I have been hitting like this for years, but always see books with pictures where the butt goes across the whole palm and touches the heel of the hand. Is this hurting my game or is it acceptable?