Any opinions re. when is the time to switch to senior flex in my irons. I am 76, a 10 handicap. In the past few years I have lost a club difference in my irons. I am still pretty accurate with my irons, but now have to hit a 9 iron for a 100 yard shot. For the past few years, I have used senior flex shafts in my driver and fairway woods, but not my hybrids or irons. I currently play the steelfiber i80 shafts in my irons, regular flex. Please don't tell me to get fitted as I already know that.