All of these individual "Help my DPS" or "Help my whatever's DPS" threads are irrelevant and need to stop. There is a Fix my DPS sticky for a reason.
That being said;
-Gems are wrong
-Jewelcrafting is a less than optimal profession.
-Reforging is wrong (not going for any haste cap)
From logs, looking at Iron Jugg;
-dot uptimes are atrocious - (UA 80%, Agony 97%, Corruption 96%) - These should all be at or above 99%.
-Malefic grasp channel time is extremely low - 36% - should be 55-60% or higher.
-From look at cooldown usage, it appears that everything isnt macro'd together for some reason.