I am about to turn 74 and readily accept the fact that my swing speed has slowed and my distance with all clubs has diminished accordingly.  I have been playing the TE irons with TT XP95 .355 tipped shafts.  I love the look and the feel of these irons. I would like to increase my distance around 7-10 yards on each of my clubs.  Thus my question. Will I notice a difference if I install an 8 iron shaft into a 9 iron, a 7 iron shaft onto an 8 iron and so on.  Is there a difference in tip flexibility between all .355 tipped shafts?