Lowbie warrior can't hold aggro?

[Veranish]

Hey guys, I'm in a trio and trying to figure out how I can help outfit our warrior.
Our trio is a cleric, rogue, and warrior, and the rogue very much holds aggro almost
the entire time. Warrior spams taunt (When the aggro is not pointed at him, which is always), and gets about 44 damage in crits occasionally, (level 14).

The rogue has a small dragonbone shard, doing 22dmg pretty consistently on normal hits. Does 88 on backstab.
The warrior has a jade broadsword? The crescent can-opener thing, occasionally doing the cap of 22, but mostly staying between 12-18.

I'm trying to figure out how to help the tank hold aggro, I figure he needs to do more consistent damage, what would be the best weapon for me to get him? My total budget is around 1k. Should he use 2H or 1H? Should he dual wield now that he's able?

Or does the rogue just need to calm down, and not stab things for a good 30 seconds after the mob arrives? Cause at this point I'm ready to just make the warrior hand over all the AC rings and such I got him to the rogue, cause it sure isn't helping him and my mana is going to waste.