Have been thinking about getting a new driver. The thing is there's nothing wrong with my Fly-Z. So I'm thinking...why not try replacing the weight in the sole with a heavier weight. I have read something somewhere that the engineers at Cobra all replaced the stock weight in the sole with the heaviest weight they make and they all reported it being a better driver. Has anyone tried it? I'm guessing higher launch, higher spin, and more forgiveness. The shaft I have in mine will need swapped, so I also get to have some fun looking for a new shaft...