Well, I just bought a Ping g430 driver from the local pro(mistake), the specs are g430 max head (not high launch) 12° with the Altra Quick in 45 gr. I don’t know , but I can’t hit it at all, It’s either too light or something. The shaft was shipped at 43”, which is 3/4 inch shorter than standard. Maybe it’s the weight difference but I literally cannot hit it. My Callaway is much better, don’t know why I even thought of changing. I called a pro club fitter and asked him about a shorter shaft, he said it wouldn’t make any difference, the shaft being 3/4” shorter! Anyway I would not go that route again, in theory it sounds great, but for me, not so much.