Like the article says, you only idle one tank through then put the car on the ground and start running it around (in figure of eights is good as it makes you vary the throttle up and down which is what is required during break in).

Remember, you are trying to idle a super tight brand new motor which is running very rich. It will propably load up and stall from time to time. No big deal. You could lean the LSN a touch if it is really loading up badly. Once you start running it on the ground with some throttle input this shouldn't be a problem anymore.

Follow the procedure as described re the number of tanks and rev limits. When you have done the 12 tanks simply lean the LSN until you get good performance (probably around 2.5 in from flush - use the steady idle and/or pinch test to adjust) and leave the HSN flush for a while until the pinch goes away. Motor should run sweet like this, just being a little rich on top end which is what you want until the pinch goes (around 1.5 gal). Then you can lean the HSN a few hours and maybe the LSN a few more hours too for final race tune. This is for the newer long LSN needle carbs, as they tune a little different than other engines. You basically leave the HSN at flush and tune for performance with the LSN as described by various people throughout this thread.