I got the wheatear at Nemrut Dag. Two singing males on the mountain. I also found Finsch's Wheatears more easily than it sounds like you did, seeing them at Aladaglar, Birecik and Kizilkuyu. Well, I think so, anyway, you can see the photos
Observations. Maybe you were a little early for the best chances for wheatears? I also found Cinereous Bunting on Nemrut, saw about 10 Slender-billed Gulls flying around the Cendere Bridge, and had Spectacled Warbler north of Nemrut Dag.