I am sure Tario would be best to give advice on these, so hoping he will chime in with what crazy is saying about the s-519 prototype 75 and 85. as someone who has always played a heavier driver shaft high 70gram to low 80gram these have me really intrigued. I know torque isnt what it used to be, but these seem really high? 4.5 on the 75 series and 3.X on the 85 series? any thoughts from anyone? thanks.