A couple other things to keep in mind as well:
First off, the settings mentioned in the manual should be concidered starting points.
Secondly, there are a variety of factors that will make it necessary to deviate from the factory settings. Weather, fuel tank location, pressure in the fuel tank, glow plug, the fuel itself, and prop size just to mention a few.
Equally as important as the carb settings is the location of the fuel tank. The closer the better, and the spraybar in the carb should line up with the center of the tank. If it's hot today and you tune your engine to run perfectly, As the temperature starts dropping in the evening, you'll find that the engine is running a bit richer. If your prop is too big or the pitch is too steep it will give the effect of being too rich. If the prop is too small, it will probably overheat pretty quick.