Grandfather no drop

I refuse to play duriel for 1600 runes, uber uniq grandfather didn’t drop … constant farm is long, maybe 26.1 it will drop for me and we’ll end the season … if you made a drop rate for uber uniqy, it’s not normal that you go 600 runes and nothing, because nothing drops

PS : people who play it also go to work

I start to level Barbarian, but then I read forums and I notice same thing. You can’t find all uber unigues for Barbarian, so it’s useless to level.
All the way I can’t find Melted to my sorc either.