Only for the fun of it, with no desire to over analyse things, what specs on the MP-64 irons were so different from the MP-32 set?
I've become very intent on fitting since learning so much from people in this forum. All the same, as many sets as I've tried over the years, most of which were made to the same length, lie, flex and grip size, some worked and some didn't. I never could figure out why I just couldn't hit some sets well.
Of course, it's IMPOSSIBLE that it could have been just me, but... ;-)