I have a pair together now and occasionaly they'll get close but for the most part they stay pretty seperate like they have no interest. They are sexed properly so I know that isn't the issue. I don't believe it's a temperature issue since I have a Mojave in with one of my normals and they lock pretty consistently. I've heard about adding another breeder size male but haven't tried that. Is there anything else you can think of to get them going? Thanks in advance!