Greg, 

Since it comes un-tipped, I would recommend tipping it a total of 1".

Cameron

1-888-TITLEIST 

How come the standard tipping for shafts in 910/913 adaptors is 1/2", but the diamana d+ series shafts are coming untipped?

Tyler, 

This was due to the testing and how we found those shafts to work best in the new 913 drivers.  This was based off performance and feel.  If you want additional tipping, you can just request that when you place your order.

Cameron

1-888-TITLEIST 

Thanks.  Tried a regular tipped 1" and it came out too soft.  I am now convinced that I can play a stiff in the S+ shaft, and it will improve my dispersion, and help me make more consistent contact.

I had been playing a Motore F1 55R tipped 1/2", which felt really good and preformed well.  But, according to some launch monitor results, the S+ in stiff performs a bit better.

Me - ss 92-93, pretty good fundamentals (grip, turn, finish).