I'm just saying, there is no feasible way kabuto just found dna from madara in his prime, and seeing as how he lived for another 50 or so years after the age in which he was resurrected, i think it's safe to say that edo tensei contradicts itself. Especially since nagato was brought back in the state he died without kabuto collecting dna from that time. And before you say he took his blood from using the Rinne Tensei, 2 drops of blood is not enough, as even an entire eye and all of the blood from 6 weapons may not be enough as kabuto explained.
No, the Manga isn't contradicting itself... because it has
never been said that they are revived how they died. People just made that up. Following my theory, it makes perfect sense. If I took your dna at the age of 5 years old, how would it know the state you died in? Does that make sense to you? Obviously that isn't the rule.
If Kabuto is able to get dna from Nagato... then whats to stop him finding dna from when Madara was younger? And using your theory, explain to me why he wasn't brought back at the age he died? I can explain it perfectly.
Tell me where else Kabuto could have got Nagato's dna? He was hidden all his life... even the people in his own village didn't know what he actually looked like. He used the 6 paths of pain to talk through the Akatsuki. After he died, his body was so well hidden by Konan that Tobi had to fight to the death just to find his location. The only place Kabuto could have got Nagato's dna is from the blood after using Rinne Tensei. Even if he somehow got it after he died, it still wouldn't contradict with my theory anyway...
Of course 2 drops of blood is enough... all you need is their dna. Kabuto
never said there might not be enough dna on the 6 paths weapons and the eye. Reread it. All he said is that it should still carry their dna.