Well just because I posted 1 post and didnt come back till the next day is no reason to neg rep me for not showing the manga page/s that stated that naruto chakra control is affected by haveing to maintain his seal......
I dont remember EVERY single page, but do remember that there are at least 2 pages that state this....here is one of them
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I do believe jiraya or kakashi had one other panel, where they commented about narutos previous poor chakra control stemming from the ninetails.
Also, dont misinterpret all this as me saying "naruto has perfect chakra control without kuramas influence", because i think at best he has around normal chakra control...(though when in bm, he seems to have enhanced chakra control, as he didnt need chakra arms to do the mini tbb, and was able to control an entire army of chakra cloaks.
This is only opinion, as i cant prove this as fact.
I can and did prove though, that at least a major part of narutos poor chakra control stemms from kuramas influence.
Now unlike you, im not gonna neg rep you to get your attention.....