Currently using Titleist 716 AP1 irons / stiff shaft and I'm inconsistent hitting them. Age is setting in and my swing speed is down. Recently swapped out my driver for a Ping G430 with a light regular flex shaft and I'm hitting it well. I've set up a fitting with the Ping guys to see what's up with their irons with an eye on a lighter shaft. I'm looking for feedback. Any insights are appreciated. Thx! Gene