I just installed a big bore 440 with 11:1 compression wiseco and hotcams stage 2 in the sons 400ex and I am wondering what main jet I should use at approx. 2500 ft. elev. I have the air box lid off and a slip on pipe made by white bros. I am thinking to start with a #165 main or should I be much more richer than that?? say maybe #175?? anybody out there with some jetting ideas to save me some time and grief