I'm attempting to breed an Aron with Head Smash. I have the male Rampardos, he has the move. I have a female Aron. They have successfully bred 4 eggs, all resulting in an Aron that only knows tackle. I'm wondering whether or not I need to evolve the mother Aron into a Lairon first, or if it is something else. I had the same problem when I bred my Water Spout Squirtle, but I forget how I resolved it. If it matters, I am using Pokemon Platinum as my breeding game.