I picked up the 910 D3 last week, and I got the Mitsubishi Diamana 72 stiff shaft. I have a swing speed of about 100mph. I'm getting distances of about 245-250 yds in the air (both in the simulator and on the course as measured by my GPS), but I was hoping for about 10 more yards. Would a lighter shaft help with this a bit? I was thinking of something in the 65-67 gram range. Thanks in advance.