Hey guys. Recently purchased a 915 D2, shafted with a Diamana D+ 70 stiff with the red head weight (I love it). Am I correct in thinking the swing weight of this club is D2? If so, I would like to keep my 915 F (which I have purchased but not played yet) and my 816 H1 at D2 as well. I bought a 915 F with a Diamana S+ 80 stiff at stock length, but it has the black, not red, head weight. Which color head weight do I need at the stock shaft length to make the swing weight of this club D2? Similar question for the 816 H1 21*; I currently have it with the red weight and shafted with a Diamana S+ 70 HY stiff at stock length, but am looking to purchase a S+ 90 HY to keep the weight progression from driver to hybrid at 10 grams each. Thanks for the help!