Board Thread:Naruto Discussions/@comment-25139119-20141027193745/@comment-5407586-20141027194225

If a jinchuriki has the tailed beast under control, the tailed beast's chakra doesn't harm he/she as it would if there were no control at all. Also, mixing chakra in the Version 1 shroud seemingly reduces the risks, but in Version 2 one has to use only the tailed beast's power.