I can answer that because I just went through the same thing with mine, plus I weigh about the same. I did .46's in the front and a straight rate 9.0 in the back. (MX Tech fork oil set at 120 mm, which is max height) I can't believe you can get the proper sag with a PDS 2 spring. I couldn't. Resprung as above the bike is great for its intended purpose, but if you are used to a converted Japanese motocrosser like I was the suspension action is very different. Really, the suspension is the only thing I am not wild about on this bike, I will give it some time and some races to make my final decision.