Sounds like you need to focus more on the shafts. Hopefully you plan on doing a full fitting, and you'll see how important the right shaft is to your preferred flight path.

Your still a youngster. Will be 79 in September. Looking forward to 80. Moved to the T300 series when they first came out and R300 shafts. Am now playing the T350 irons and love them. Thanks to my fitters I have been convinced that regular shafts are what I need making life bit easier in all my clubs. The regular shaft sure makes hitting the new GTs more pleasurable. Agree with Barry. I too would check out new shafts and maybe take a look at the new clubs, at the fitting. Tell the fitter what you want and then let him/her do their thing.

I turned 65 a couple of months ago. My swing speed has decreased and I am hitting the T200 with senior flex Fubuki shafts. They launch significantly higher than my T350's with Tensei AV red senior shafts,