Exactly, here is the panel u were talking about there ...... See:You must be registered for see links
Look at the panel above my friend he didnt lose balance . . . . Naruto combined Kyubi chakra with SM once already. Naruto has mastered balancing nature energy with chakra, so it isnt much of a problem if he tries. Plus i didnt see anyone mention that a tamed Kurama chakra unbalances anything.
You do realize that this is false for the simple face he didn't do so in his fight while he was in BM? Why did Naruto make separate clones if that was the case? In BM he made a separate SM clone and also made separate KM clones to grab the chakara rods. That right there is basically telling you he cannot combine the two because of the imbalance.