ORIGINAL: downunder
One thing I'd disagree about with the manual is their recommendation on fuel. You don't have to use whatever you're going to fly with, even zero nitro is perfectly OK, but I'd use a fuel with a fair bit of castor.
maybe they only mean that you don't have to use any special fuel to the break in process and they talk about 10 to 15% because that's what they recommend for normal usage.