If I am looking at the bottom of the carb with the bowl removed I can see the main jet and two other jets. I need help identifying which is the pilot and what is the third jet? The service manual contradicts b/c one diagram shows the pilot jet nearest the air/fuel mix screw and another shows it on the opposite side of the main jet. The mysterious third jet is a #72. Main jet is 188 and what I think is the pilot has #45. So my question is what is that #72 jet?