I was recently tried out and was fitted for 716 AP-1 irons with a XP90 (S300) Shaft Standard length shaft. I love both sets of Titleist Irons. I want to upgrade to the 716 AP-2 irons. Can I play with the same XP90 (S300) Shaft in my 716 AP-2 Irons ? I currently have 714 AP-2 irons with a Nippon NS PRO 970 Stiff shaft (1/2 inch over standard length) - (six foot tall). Maybe looking for a shaft in the 95 - 105 weight (Mid launch) for the 716 AP-2 irons. I am 57 years old. Iron swing speed (75-78), Driver (90-95). Big Titleist Fan and will probably eventually own both sets. Any thoughts/advice ?