I know no one agrees with me, but:

Pay real close attention to the video around the 1:00 minute mark. Notice he drops the throttle around 1:07, the idle stays high, then it drops to a normal idle at 1:10

http://www.youtube.com/watch?v=BJFsJ...eature=related

Notice what it says in the caption at that point.

An idle that drops, must have a rich enough LSN. If it drops right away, the HSN is probably to lean. If it slowly drops, the LSN is too rich.

Here's another video (hard to tell what's happening, but the narrator says it all):

http://www.youtube.com/watch?v=BfivY2NoIKc