When you say manuals, what do you mean? Can you give us some exact ranges?
How long has he been with this mate? Is the mate also a male?
What have his poops looked like?
Do you have weights on the two?
When did you get both of them?
Do you have a backup cage, so you can separate them?
Where did you get the gecko, and do you have any pictures you can post?
R. auriculatus- Charmander, Cupcakes
R. ciliatus- GreenBean, LittleFoot, Hubert, Mr. Red, Captain Peanut Butter
R. leachianus- Dragonite
40G planted freshwater community fish tank
3 5G planted Betta tanks- Plum, Charcoal and Blueberry