(Sorry about that - hit send a little too early).
Perhaps I'm confused, but shouldn't something listed in WS and JP also be in multi?
Here's a domain from an email that made it through our filters:
http://y.net.mystuffsupplyMUNGED.com?f4=T12k62
# dig +short @localhost mystuffsupplyMUNGED.com.ws.surbl.org 127.0.0.2 # dig +short mystuffsupplyMUNGED.com.multi.surbl.org <nothing>
Am I missing something?