I've done everything anyone has told me.. run strikes, and yes im running heroic siva crisis strikes. None of my loot that's dropped has been higher than a 343 blue gun. I have my highest gear on which are blue engrams. I tried to farm omnigul but too many of the groups i met up with didn't have raze lighters and enough common sense to kill her a decent amount of times. What do I do and/or what am i doing wrong?