Use your fingers

Grip the putter any way you like, as long as it doesn’t hinder your left hand’s role in the stroke.

But make sure to grip the club in your fingers. The shaft should run up the lifeline of your left hand for clubface control, but your fingers must contact the grip.

You can drop the right forefinger down the shaft, but don’t steer with it.

Forget about what your palms are doing. Fingers equal feel.