Anyone using an AD DI driving iron shaft or similar in a driving iron?
I’ve just picked up a Srixon Z U65 20* with stock Miyazaki Kaula 70 S. Amazing club and goes very well, it’s probably just getting up a little too high for a 20* head. May look to put a heavier graphite shaft in it...some dudes on WRX have put an AD DI driving iron shaft in their U65s.