I haven't really paid attention to minmaxin and "fixing dps" lately but I got a couple tips you may or may not find useful.
Depending on your situation with money I think you should get the best enchants and gems for at least the BiS gear you got (cloak, 50crit -> 65crit enchant and 40str -> 50str gem). Sounds like a small upgrade but it adds up. If you got the justice points you should get Gauntlets of the Molten Giant for 2p set bonus which is a nice dps boost. Then get +50 str enchant on them.
Best enchants and gems for at least the best items does wonders.
Also, try macroing Inner Rage with your Heroic Strike and you should get a hang of it. Something like
#showtooltip ((Inner Rage or Heroic Stike))
/cast Inner Rage
/cast Heroic Strike
I'm not sure how that works as I don't usually create my macros myself :P
Hope this helped?