When you purchased your Pings didn't they do a club fitting?? When I purchased my Pings, and even my new Callaway XRs, they had me hit on a strike board to gauge the lie angle. They can bend it up or down to so it impact flat. To answer you question, at address the tow can be a "little" up in the air, the real question is what is the lie when you are swinging the club, it should impact the ground (or a strike board) flat.
8/14/15 at 9:17pm