My current driver is a 910 with a Diamana Blue 65 gram, regular flex shaft. My SS is mid-80's. I want a higher trajectory than current. I tested a 915 D2 with a Diamana Red 50 gram, reg. flex shaft yesterday. It felt very smooth and stable at impact. A little higher swing speed and more distance. Trajectory though was very high. The fitter did not have the Blue in a 50 gram for me to try. Anyone know if this shaft would be similar to the Red with a little less trajectory???