I would get a shaft fitting before I would cut it down. Go to a place that has a launch monitor. They will be able to give you exact statistics of how your hitting the ball. I was using a stock shaft in my Nike and the ball was really high on well struck hits. I decided to have a launch monitor session at my golf shop and they had me try different clubs and different shafts. I was tested on the Callaway fitting system since they could switch shafts very fast. I bought the shaft that had the best angles, mph, etc. It was the ProLaunch Red. I came back after it was installed in the Nike and I actually had better numbers than the Callaway. I was very happy as I love the look of the Nike driver.