I was fitted for #712 AP2 Irons with Tour AD 65 Gram Graphite Shafts.  I find the clubs are too light and cannot feel the club head at the top of my back swing.  I lose my tempo when I go back and forth with other clubs in my bag.

I have an old set of Titleist 695 MB muscle backs reshafted with Titleist R-Flex Select Graphite shafts, but weight not shown on the shafts.  I am told the swing weight is around D-0 (old standard method of weighing). They appear to be a bit too heavy.

If I were to change out the shafts on the AP2's with the Select Graphite shafts, what would the approximate swing weight be, and are they suitable for the AP2"s?