But once I show you how I setup my blades, you'll learn how to balance your blades, it's like riding a bike, you will never forget.

Alright then, here is the crazy story on blade balancing. RC helicopter blades spin at very high rates of speed and at those high speeds you need to make sure that your blades are identical by C.G. point and weight.
Here are some of the negative effects that will occur if you don't have the blades balance correctly
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Dynamic balance.
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Static balance.
The first step you will need to perform is the dynamic balance. What the dynamic balance does is that it finds the blade's Center of Gravity (G.C.) point.
After you are done with the dynamic balance then you can start the static balance
The static balance makes sure that both of the blades weigh identically. You have to make sure that the static and the dynamic balance are both within tolerance.
Below you will find an economical way to balance your blades, and you know what? You might even already have the tools you need in your tool box.