Thank you all for the replies. I tried also to sharpen each serration one by one (just like Jeff said) and indeed, the serrations are more pointy, but not that smooth. The edge of the serration is somehow jigged.
OTOH, I've seen both Lansky and Gatco sharpeners and I'm somehow confuzed: they say there are crocksticks specially tailored for Spyderco, Cold Steel aso. I understand that there is a portion on the rod fitted for small serrations and other for the larger ones, but different knives have different serrations. I guess there is a size difference between the serrations of a Ladybug and a Chinook. <img src="wink.gif" width=15 height=15 align=middle border=0>
And if, despite my theory, those crocksticks actually work, couldn't Spyderco make something similar to be fitted in the 204 base?