The Tale of the Creepy Finger

For some reason I find it constantly difficult to keep my pointer finger from creeping up the rubber when I'm hitting forehands. 

I have to always remember to try and keep it on the parallel of the bat. I think I find that it feels un-natural in that position so when my mind zones out that sneaky bugger will start moving up on the rubber.

Why is this? Is it common. Could this be solved with a different style handle? What's the best way to train it out of me if I find that it feels weird in the position it should be in. You can kinda see it creeping up in this here animated gif.

Hi Jim,

It is a common problem.

Once solution that I was shown and use often is to put a little piece of paper or coin under the tip of the pointer finger while you are practising.  Then if your finger moves the coin or paper will drop and alert you to the movement.  Give it a try.