I'm making a new thread but it's closely related to my thread about Dungeon Gear Sets.

If this is in the wrong section, apologies beforehand.

From my experience farming The Vault for the past week, I am about 90% sure the drop rates aren't working as intended, or the drop rates aren't fair for certain classes.
Specifically I'm farming for the Halonic Vicar's set for my NIN, but so far I've only had the Legs and Helmet drop once each, and the daggers twice. Meanwhile I've seen the MNK set "Halonic Friar's" drop the whole set at least 2 times, with the legs and feet drop the most.

I'm just requesting someone from SquareEnix to respond, if there's a problem with the drop rates, or I'm just super unlucky and if I want the set I have to queue the dungeon 10 more times? 20 times?