No, his Henge was fine. In his third year at the academy he couldn't do a Henge properly but that's it. He's never shown having any problems with Kawarimi (even if he's only used it once) or Henge during the manga. And that the fact that he could achieve both of them and not the Bunshin leaves me hesitant to assume it was just a matter of poor chakra control. If it was then it means that the Bunshin probably needs more chakra than the other two since Naruto's problem was creating too much chakra and then not using enough of it in the jutsu.
I imagine his poor chakra control was a result of having too much chakra and having the Kyuubi's chakra in his system (both mentioned by Kakashi) and him never bothering to improve his concentration like with the leaf exercise.
I imagine his poor chakra control was a result of having too much chakra and having the Kyuubi's chakra in his system (both mentioned by Kakashi) and him never bothering to improve his concentration like with the leaf exercise.