The same procedure will work on all 2 stoke glow engines.
I personally would say that Japanese engine manufactureres traded off performance for manufacturability and consistency so that you can set the engine up per their instructions. I would also say that this approach, while not a bad one, had spoiled most of the pilots and deprived them of the chance to get to know their own engine and to learn the essence of engine setup.
Please take a Toyota and a Ferarri for example, their difference in performance and handling requirements says it all.
As for starting needle setting, don't worry about that, just keep the main at 2T and adjust the idle to a suitable temperature. The key point is to match the smoke trail so that both needles provide about the same kind of mixture AND at the intersaction of their effect curve along the rpm axis, the sum of fuel from both needles provide a flat curve ensuring smooth transistion. Imagine a curve with fuel volumn on the Y axis and rpm on the X asix, plot the needle effect on the graph and you can visualize what I am trying to explain. From then on, adjusting the needles to move the intersacting point towards the high rpm side for more power (you will effectively be leaning the main needle and opening the idle more to compensate for temperature and fuel richness) and vice versa for more torque and better temperature. Remember that both needles have to be adjusted to ensure a smooth and flat cross over whever the intersacting point is.
Stephen
www.cyberheli.com