NPC Spawn Issue: Pawduster-Karnors Monk Epic

[Rais]

I know he can be a rare spawn ranging from "not Raster rare" to "Pain in the ass rare". We haven't had a single spawn since patch,and we've pretty much been killing all but 1 hour since then. Plenty of Warlords/Bodyguards, just no Pawbuster. Just want to make sure I guess you can say.

Any information would be appreciated.

*Pawbuster! Lack of sleep sucks.