This is the same final stage as for good melees. The exact locations for each are listed there and it shouldn't be back past page two of the forum yet.
Hardest part I've had with it is getting the right group together to go get them. Every group I get together off my BL or lfg list is more interested in xping than getting their quest items, and if you go to Guk they all seem to want to go down to that same 3rd camp, despite the slow *** xp you get from all the cavaliers laying hands on everyone.