Got mine January last year.  Drill pin above ring finger.  Hate it at first, very uncontrollable.  

I decided to take to polish off with 800 grit sand.  Polish again with Powerhouse factory polish.  WOW! It's like a difference ball.  I found it good with medium oil with a clean or spotty backend.   It could handle a bit of carry down but if too much it wouldn't move.  I've to open up a bit for the ball to have full potential.  Mostly is from 15 to 10 and it came back strong.

Hope this help.