then why ask on a forum for people to provide a link on another site?
just because a method is published on what you might think is a reputable site doesn't mean it is reputable (appeal to authority illogical argument)
simple dude do the following:
1)use the fuel you will race with to break it in.
2) heat up engine well with a hair dryer
3) start engine
4)idle for 1 tank keeping it at 80 to 95 degrees celcius
5)idle for another tank, blipping the throttle intermitantly
6) drive for the 3rd tank onwards on the track you race at the most
7) by the 7th tank, keep an eye on temps, but it should be pritty rich now due to the engine breaking in, begin to lean out at the 5th tank+ and keep at 110 to 115 degrees celcius
you should feel it breaking in. each time it gets richer, lean it of a fraction. by the 8th to 10th tank it should be close to race tune.
some engines take 1 litre to break in some take 2 or even 5. it all depends, you need to feel your way through the process. there is no way you will learn how to break in an engine by asking on a forum, we can help, but we can only be a guide, some things are best learnt hands on