I get the impression that most of the trang item can be traded, so do some runs in hell elderich shenk pindle and hopfully get some elite unique, trade it will mass trader, (ppl with load of stuff to trade with) these trader seems to trade base on the trade value of the goodie rather then the usefulness of the goodie for his characters.
I get my glove in a nightmare game, the armour from a hell act 2 game and then I trade nightwing vile and razor tail for the belt and shield. the helm is missing.
somehow the helm seems to be very very popular.