I just started playing a 913D3 driver with a Bassara 50 Regular Flex shaft.  I went to that shaft looking for increased swing speed.  My swing speed is 90 mph. I've never had a problem getting a high launch angle. Now I find I am hitting the ball too high and losing total distance.  Should I look at changing shafts to a mid launch shaft like a Diamana S + Blue 62.  Thought?