Based on what I have read, the USGA plans to make square-groove irons non-conforming in 2009. I just spoke to a PING rep and he said the PINg clubs will all still be conforming. I wondered because I just bought a set of Rapture irons. H esaid something about the radius edge u grooves PING uses makes them conforming (and will allow them to continue to be conforming). Does anyone know any more about this?