LOL! I wish I knew where all my parts went! I swear. I really don't keep track of them. I simply play along, I upgrade, trash, infuse.... I even broke down a ton of year one stuff.... But now, I can say the drop rate for me at least is heavily skewed toward armor. I get positively giddy when I get a weapon or weapon engram. Then I have to agonize which piece gets blessed with an upgrade!