StevenBoca Golf

I have a Ping G400 SFT. I had 3 upcharge options. They tested me and said to put in a Mitsubishi Kuro Kage Silver Dual-Core TiNi Stiff shaft. I bought the driver at a PGA Super Store. I hit it and the SFT does do what it says. Ball mostly goes straight but not enough yardage for 95-102 swing speed. I think the driver has to much spin. I should have taken the Project X HZRDUS Yellow stiff, yes? Do you have suggestions for a low spin, lighter shaft? The Ping head is heavy compared to other top brands. Thanks!