World of Warcraft-MM Hunter DPS PvE Problem?

Now some of you that are looking at this saying your wasting your life away but you know unless your enjoying your self your not. but lets go ahead wit the problem, i am a 85 hunter that has an item level of 350 i do pve but im having a problem with my dps im hitting 10k in dps i have seen my rotation of Steady Shot, Aimed Shot, and Chimera Shot and once in awhile ill hit above 10k- but not in dungeons i think i have done my spec right bot not sure. i am a MM Hunter and im also using mostly crit chance more than hit chance when i reforge sooo what should i do to increase my dps SINCE im 350 item level