Wish I could help you, I had 1 before I started the crafting quest. I checked last night, and I already had two more. Just keep questing I guess. Boss fights are so long that farming for me is out of the question. You might want to see what you can craft before you start farming. The gear for me (death) wasn't a big benefit over the AV gear. If I knew that going in, I wouldn't have done the crafting quest.