bopm problem

I don't mean to act like a n00b, however this is a huge problem,
today, I had a botnet attempting to load about 500 total proxies, 300
of which were caught by bopm and k:lined, however the other 200 were
not caught and I had to manually ban them. I'm using 3 dnsbls, and
it's configured "perfectly" but why isn't bopm scanning even some of
the simplest proxy ports used today to bypass scans? Shouldn't more
ports be added to bopm's list of ports to scan?

Alex