After taking the weekend to rebuild my plane after my first crash I finally got to the point where I am testing my engine, but it seems to be running to lean or something, but Im not sure how to fix it. Once the engine is started and idles for a few minutes it putters and doesn't sound smooth and if I quickly go to full throttle the engine seems to rev high for a sec or two and then die down to half power and cut off. What is the proper way to tune the engine so it doesn't cut out after an increase or decrease on the throttle? What is the proper way to use the little knob on the side or the engine?