Hi all. I am looking for some feedback on shafts. A few seasons back I put a set of graphite design Reg Flex AD 73i  black paint shafts in my set of 735 chrome irons. Yeah I know they are old irons  but I am too so don't  get too hung up on that part. I can still get it around pretty good. The reason for that was to see if I would like the transition from  steel to graphite. Age, swing speed, aches, ...etc. My question is does anyone have an idea of what shafts Titleist offers that come close to the specs of the AD 73i's that I can hone in on to demo for my new set. Thanks!