Totem of Infliction Quest

Will the quest objects for http://www.wowhead.com/quest=101/the-to ... infliction disappear if I drop and retake the quest?
I've acquired all the items for this quest except for the last (10th) ghoul fang. The first 9 came quickly (almost a 2/3 drop rate), but I've been farming the Raven Hill Catecombs for 2 days now, including hundreds of kills (spreaders, flesh eaters, etc.), and the last fang just won't drop. The good news? I've gained a whole level killing these guys.
Has anyone experienced this problem and, if so, were you able to solve it?
I had the same experience in Redridge on the quest to obtain the blackrock axes. Got all but one axe, then I dropped and reacquired the quest and got the last axe on the first kill.
(FYI, I did check the bug tracker and no bug for this quest exists)
Thanks, in advance
I've acquired all the items for this quest except for the last (10th) ghoul fang. The first 9 came quickly (almost a 2/3 drop rate), but I've been farming the Raven Hill Catecombs for 2 days now, including hundreds of kills (spreaders, flesh eaters, etc.), and the last fang just won't drop. The good news? I've gained a whole level killing these guys.
Has anyone experienced this problem and, if so, were you able to solve it?
I had the same experience in Redridge on the quest to obtain the blackrock axes. Got all but one axe, then I dropped and reacquired the quest and got the last axe on the first kill.
(FYI, I did check the bug tracker and no bug for this quest exists)
Thanks, in advance