Knode filters?

I'm trying to get Knode to filter out spam entries from the downloads in the comp.lang.tcl newsgroup, but I'm finding the info in the Handbook confusing, and my filters aren't doing anything. My attachments show what I've come up with so far. Does my Spam Filter need to be above All in the list? The handbook doesn't talk about this aspect of the configuration at all. If that's not the problem, what else do I need to look at? Leslie