Originally Posted by
Fya
Right off the bat I see a problem, Your frost strike is doing more damage then your obliterate. Your disease up-time on PS is terrible (especially when spec'd into epidemic) you need to have that over 80% on 90% of the fights. This will kill your dps otherwise (probably why your oblit was below your FS).
Finally you were still getting dodged (and parried O.o) by the boss, so you weren't expertise capped at the time. When it comes to parry, don't stand in front of the boss when you don't have to, and on major domo you barely have to. (you can run back and forth between the cleaves on scorpion phase until he get's to about 7.)