Hi BrentJWestern -

From my experience if the Ahina 72 had the right feel for you but the 82 produced better trajectory and spin rate numbers you should be fine tipping the stock Ahina 72 1".  Using the shaft performance chart as a guide you can see that tipping the Ahina 72 should definitley produce lower launch and spin than the 82 Ahina but really your only firming up the flex around a half a flex.  It won't play as firm as the actual "X" would.

Thanks for the reply.  We were gonna tip it a half inch, not a full inch.  Where would that put it on the spectrum? How would it affect flex and how would the 72 half inch tipped compare to 72 stock and 82 stock?   I'm apprehensive about buying a club that I didn't hit but that we guesstimated would fit. 

Tipping only 1/2" would obviously keep it slightly softer but the biggest difference would most likely be in the spin rate and launch numbers.  I would put a 1/2" tipped 72 between the Titleist Ahina 72 (red) and  Titleist Ahina 72 (blue) on the chart.

I understand the apprehension but if the fitting went well and you trust what the fitter was saying about your numbers and ball flight, I would go with it.  

Thanks Nick, I appreciate it. 

I'm willing to listen to any other thoughts on the 910D3, but wanted to ask Nick (or anyone else a question).  I was fitted into the DGS300 for my irons.  We hit the AP2's which were nice, but were a bit high and flighty for me.  I hit the CBs and MBs and hit both well.  Went to 2 degrees up and I hit the CBs awesome, but couldnt hit the MBs because he didnt have them in 2 degrees up.  I like the looks of the MBs better, but want to see what the differences are before I make my choice.  Any help?

One last question (I hope).  What is the difference between the Ahina 72 (made for Titleist) and the Diamana Ahina?

The Diamana Ahina is a tour shaft designed for tour ball speeds.  The Titleist version is a bit softer and is designed to work better with ball speeds below the tour average.  You can get the Titleist Ahina to play very close to the actual tour version by tipping the shaft.    

The MB is a traditional muscle back iron and the CG (center of gravity) on the MB will not be as low and deep as in the CB.  This will typically result in a lower launch and less spin with the MB.  The MB will typically be easier to work right-to-left or left-to-right but be less forgiving on miss hits.   You can certainly do a combo set of CBs and MBs if you want.  From what you've said it seems like the MB would work out just fine at 2 up.  If you hit both well and the 2up is the proper lie for you, then changing the MB to 2up should only provide better results than the standard MB you hit.