Your chest is itemized for tanks, your neck and shoulders don't have critical strike on them -- think about the shoulders from Un'sok and the neck from Garalon.
Keep doing Sha every week for tier pants and gloves, your chest/legs aren't gemmed correctly, the socket bonus with Inscribed gems in the red sockets would net you a better DPS value.
And get Xuen, it's behind 502 Lei Shen close to the 5.1 trinket if you aren't engineer.