This is one of the worst quest designs I have played. Not only are the mobs just not there most the time cause they share a spawn with some other mob. But you are also fighting over them with thousands of other players, ANDDDDD its 10+ gold a pop because they take rocket fuel, ANNNNNNNNNNNDDDDDDD they dont drop 100% WTH Blizz
They drop 100% if you are doing it right. But I agree, its a cancerous quest to finish. Should increase spawn rates