Just finished rebuilding my 2007 400ex and got a couple hours riding time on it and it runs great but when i let it sit and idle after 30-60 sec it will slow down like its gettting too much fuel or not enough fuel and when you go to give it gas it will just kill. Carb is brand new, I have a 42 idle jet and a 175 main. Bike has 440 big bore, k&n filter no air box lid, wrapped stock header, lexx exhaust, hotcam stage 2. Fuel screw is at factory setting is this what I need to adjust?
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