Like Rickochet mentioned... and is very important... you have to go with softer flex shafts because of the lightweight head or it will be too stiff.
I took the 46” Paderson shaft and put it in full length into my Ping head (which is not lightweight). It plays to 47.5 and I bomb it straighter than a 44”. It plays softer for me at that length which is great!
Shafts are so much more stable now, that’s why Callaway is finding this.
My gamer shafts are 2 HOF shafts at 46”. No issues at all. I’ve just put a small extension in the Paderson pull I picked up that I’d like to be a gamer as well. My plan is 46.5”.