He could just have weak legs, then. You say he's active? I was concerned when your first post mentioned that he tends to fall over backwards onto his back after only taking a few steps. Giving him niacin is strongly recommended.
Poor guy...Wobbles was like that, too. That's why he's "Wobbles". It's usually a sign of weakness coming out of the shell. Wobbles had a difficult hatch, and his yolk wasn't fully absorbed, so I had to give him some vitamins, niacin and electrolytes to make sure he had enough energy and...