Other mistake: When Chozen is buying vegetables from the villagers, one of the weights from the scale is knocked onto the ground. Daniel picks it up and realises that its not a real weight and breaks it in half. If Chozen wanted to cheat the villagers when he weighed their vegetables, he would need weights that were heavier than normal, not lighter plastic ones. Lighter weights would mean that Chozen would need to add far more of the light weights to make any amount of vegetables balance out, therefore he would be paying more for the vegetables than they are worth.
Other mistake: During the scene of the Bone Dance in the castle, Daniel shouts out "Behind you!" to the Japanese girl as Chozen grabs her. As he does so, the shot goes wide and you can see Daniel and Mr. Miyagi rise up and begin to run forward. The shot then returns to just Chozen and the girl, and when the shot goes wide again, Daniel and Mr. Miyagi are again just getting up and running forward.
Other mistake: When Daniel was using the drum technique, he was blocking with his left hand and hitting with his right hand. So how was Chozen's right side of his face bruised if Daniel never hit him on that side of his face?
Suggested correction: The twisting motion of this technique allows Daniel to use both hands to block and strike depending on which side his opponent used. If Chozen throws a left hand, Daniel would block with his left and strike with his right. If Chozen throws a right hand, Daniel would block with his right and strike with his left.
Other mistake: On the flight to Okinawa, Daniel is reading a map, looking for "Tomi Village". Mr Miyagi tells him to find Naha and go south. Daniel replies, "I keep hitting Kadena Airbase". Kadena Air Base is NORTH of Naha.
Suggested correction: And then Daniel calls himself stupid for holding the map upside down. Not wrong at all.
Obviously Daniel would have had to have failed geography to hold the map upside down. All of Asia would have been east of Okinawa, and Japan itself would have been south of Okinawa. Also, if he didn't realise that he was reading all of the city names upside down, he may have already suffered irreparable and irreversible brain damage in his last tournament.
Also, the book would have been upside down.