Some players with fast speeds tend to launch and spin the ball higher with AP2's -- I would strengthen the lofts in the heads before I would count on the shaft to bring things down...  But some sort of heavy stiff tip shaft such as Dynamic Gold would…

"Serious clubs for serious golfers"

Based on Titleist's long time committment of producing better clubs for better players, one can never go wrong in using it.  With four different iron models they have you can choose which one will fit…

Sorry for the late response!!

I too had a loss of distance with my 910F with the reg Kai'li.  The spin was way too high.  I solved it with the stiff A'hina 82 shaft.  Also solved the driver distance problem with the 910 D3 8.5 and the OZIK HD6 shaft…