In order to get 35-40 mm of loaded sag, I need too much static (no rider) sag. In order to get the forks to bottom at all I need like 45-50mm of rider sag. Jason's section8superbike site has a good explanation about suspension setup (also I weigh 150lbs and .85-.90kg springs work best for me, but those forks come with 1.0kg springs).
Joe