I just purchased a new 913 driver with a D+ Whiteboard X shaft. Do you tip your stock or exotic shafts at all prior to the installation of the surefit tip?
I think I asked this before with the 910 drivers and was told they are tipped 1/2" unless it is requested to be tipped more.
All custom shafts are tipped 1/2" unless otherwise requested. The stock shafts, like your D+, is un-tipped unless you requested additional tipping.