I was wondering if anyone could help me get my 2000 YZ426F jetted correctly. I am running a stock engine with an FMF Power Core IV (old round core design) spark arrestor. I am running a 167 main (+5 from stock) with the pilot screw 5/8 turn out, as recommended by FMF. My bike is running too rich though. I ride in Idaho at higher altitudes. If anyone has any suggestions I would appreciate it.