I ordered a set of Titleist AP2 714 irons with N.Sl Pro 950 Stiff shafts and was thinking about switching to something a little bit heavier (120g-130g) just to bring the ball flight lower. What is the tip size on these irons (Taper tip .355 or parallel tip .370) and what are some recommendations/options? Also, where can I send them to get it done since I live on Oahu Island, Hawaii? Much appreciate it!