We posed that question to Bob and here was his reply: 

We are still testing and evaluating numerous options. We plan to offer the scoreline configuration  that will give us the most spin allowable in regards to the limits established by the USGA.   Thanks…

Try putting left hand low (assuming you're a righty).  I used to struggle with a good consistent stroke, until I switched the grip.  Now I just rock my shoulders and watch the ball roll true.  If I miss a putt it's usually a misread. 

Putting is…