Infraction: I don't even know where to start here
Message to User:
How do you not know what an epic gem is? Do you know what an epic item is?
Also don't waste 3/4ths your post just saying "thanks." Use a PM for "thanks" if you must. You may have noticed that we have big threads, and we prefer not to make them bigger with trite conversation.
What curse are you using ? You should use CoE if you don't have any better debuff in your raid (unholy DK, boomkin). If you got one, add CoD and CoA (when time to die < 60sec) to your rotation (keep the curse up).
You should stack haste instead of crit rating. Haste is the second most valuable stats after spell power, when hit capped. Crit rating is not that much valuable. At your gear level, you should have 350-400 haste rating. Also replace your meta gem with the +3% crit damage. Also get epic gems and a haste trinket (see Auraya in Ulduar 10).
Do you use a firestone ?
Have a look at SimulationCraft to simulate your DPS in any raid setup.
simulationcraft - Project Hosting on Google Code
I haven't been using a curse 'cos the Warlock Class Leader in my guild says that, too, saps DPS from a rotation. : /
I will work on stacking some haste rating. Thanks for the info.
I have no idea what epic gems you're talking about to be completely honest. Everywhere I've looked says Runed Scarlet Ruby is the best if you don't have Jewelcrafting as a profession.
And thanks for the info about the haste trinket and yes I do use a firestone.