Upon looking at your armory profile I noticed you had a couple of PVP enchants + I believe a piece of pvp gear. While it may have been the only piece of gear you could have
gotten for that slot it is not recommended for PVE and raiding.
I don't seem to have a problem with your gear though , it seems to be gemmed with good gems and brought up to raiding eligibilty.
As Nico says we are short on melee DPS and don't have a ton of rogues. I would like to see you in action to see how you play your class.
Message Nicoleirene or myself in game so we can chat a bit and maybe throw you an invite