You really need to play around with the unit and get an understanding of how the rebound adjuster works.
I got a little confused when I was pulling my forks apart too.

Basically you need to set it up so that you get about 10-12 clicks of movement out of the screws. And set it up the same on both forks.
The adjuster screw should NOT screw in as far as your deepest one does.

If it screws in too far, then (from memory) it just plain blocks the fluid flow, I seem to recall.
Sorry I can't give decent detail, but if you unscrew the top unit and play around with it a bit, you will see that you can set the amount of rebound adjustment by screwing one part into another until you have 10-12 clicks of adjustment and then locking it off with the locknut.
I think the standard setup gives 10 clicks, but I set mine to give 13 clicks of adjustment.

Hopefully someone else can give a better explanation?
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