So, since a patch a few weeks ago Fire dust has been dropping all over the place. However it seems the other items needed (Sulphur and Saltpeter) are super super rare. I think in my entire Gorgon career I've seen 1 Saltpeter drop ever, and no Sulphur. I've cleared the Goblin dungeon multiple times over with no drops, the crypt all the way down to the Omegaspider and a bit beyond; Still no drops. Are they supposed to be this rare or am I looking in the wrong places?