I dont really believe in equipment break in periods or the flip side of honeymoon periods. I believe that on the range and in simulators there are few nerves and no hazards. You bang away. In golf there are both of those things and you dont get a do-over. I also believe that you find a product that works, get fit for the right shaft and you will see the benefit of a club head and shaft that work together rather for one's swing rather than in spite of one's swing. However all the technology in the world is not going to replace a non-repeatable swing.