A friend asked if I could replace the broken graphite shaft that was in his wife’s PW. After drilling out what was left in the hosel, I noticed that it looked as though it was designed for a taper tip shaft. A standard 0.370 tip would not go all the way down, so I’m pretty sure it’s a taper tip. The irons are at least 10 years old and I could not find any specs for the irons or the graphite shafts that were installed in them at the time. I would like to replace it with a similar shaft if possible. Any assistance would be appreciated.