I wonder if anyone could answer my question regarding GT1 hybrids. They have the option of using 0.3335 fairway shaft or 0.370 hybrid shaft, so is it a case of just changing the adaptor, or is it built for one or the other? The reason I ask is I have already purchased, and played with the GT1 29 degree (AWESOME) but have both type shafts that I would like to experiment with. Any feedback would be appreciated.