I can only offer encouragement as I have 2 level 30 hunters that each have raid helms, boots and chests and exotic arms. I could not, for the life of me, obtain the raid arms. I had 2 characters going for the same drop every week totaling around 70k kills including over 7k raid kills and 19 completions (not to mention so many times we just couldn't get atheon). Finally, this past Tuesday I obtained my first pair of raid gauntlets for my hunter. So now I can swap out exotics and still have the comfort of being level 30. I obtained all of the other gear after about raid 6. So I went a dozen raids, half of them hard which meant double drops, before I finally got that one piece I needed. So how did I celebrate? I used my third slot to build a warlock and do the same frustrating grind with him, minus the benefit of having 2 play-throughs a week. Hang in there.. Also, I was at around 14 days of total play time between the two characters before I got 1 full raid set. You're not alone.