I think he doesn't because KCM is not connected to kurama! it's stolen chakra which he lost the moment he died!Yes but he doesn't want to use it anymore since he has better power up like so6p sage mode
You know he might actually still have that portion of Yang Kurama, the way he retained all of the chakra everyother bijuu shared with him...I think he doesn't because KCM is not connected to kurama! it's stolen chakra which he lost the moment he died!