Whats your Crit/Surge/Power/Alacrity? Also, what relics are you using?
I'm maxing at 1650 and trying to get over 1800
With Rakata Stim and buffs:
Crit Rating: 205
Proc relic (GET ELEMENTAL ONE!) and on use relic both dread guard
63s in hilt/offhand armoring and full 63 belt, rest is 61s