You'll know you're done when the tire stops at random spots. If it continually stops at the same place, it usually means you're still out of balance. When it stops, it should just stop. Not rock back and forth, change directions or anything like that. If that happens, its still otta balance. A little practice and you'll get it. Harder to explain than do.

thanks Gravityjunkie that what i tough
in the proline video he say that the way to do it, but that way it will keep rocking back and forth.
balancing tires take longer than anticipated.