So my guild is currently progressing on Thok heroic and I'm having trouble dealing with the interrupts in phase 1. I've tried both PE an UF but my damage with both is inconsistent. I read somewhere that he casts the interrupt at 1.5 second intervals, and my lightning bolt is 1.53 second cast time. Anyone have any advice so I can push more damage during this phase?
Logs: http://www.worldoflogs.com/reports/rt-xp4yt5hkrl1ogn8x/
armory link in sig