The All Blacks think they have identified weaknesses in Argentina's defence which so frustrated them in Wellington.



Repeatedly repelled in the wind and rain at Westpac Stadium, it was only in the final quarter that the All Blacks scored their two tries through Julian Savea and Cory Jane.



However, they are confident they are better prepared to take advantage of the Pumas' defensive strategy of leaving space and then quickly filling the gap.



Having the experience of Dan Carter for tomorrow's Rugby Championship test at La Plata, near Buenos Aires, will help.

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Carter missed the 21-5 victory over the Pumas and 21-11 win over the Springboks in Dunedin with a calf injury, but has made a timely return in place of Aaron Cruden for what is expected to be an extremely tight and intense match at the Estadio Ciudad de La Plata.



Conrad Smith is one of the men outside Carter who is preparing to run through a blue and white brick wall, but said the All Blacks had learned plenty from their last encounter.



"We looked at it the last time we played them, but it's a different thing to experience it ourselves," Smith said of the Pumas' effective defensive screen. "I think as players we understand it a lot better now. That's the big difference, and we've trained for it a lot better."



Carter said of Argentina's defence: "They present a few opportunities for us, but they tend to cover those extremely well. You almost have to earn the right to attack against them and be extremely physical with the ball in hand but also really smart. They like to slide and push you to the sidelines ..."



Carter's coolness and confidence was just what the All Blacks needed, Smith said. "Playing over here in what we expect to be a pretty hostile environment, just having his cool head is going to be big for us and we'll rely on him directing us around the field and not get too flustered if things don't work out or we get put under a bit of pressure - which should be the case." Apart from Carter's return to the No 10 jersey, other changes include Aaron Smith returning to halfback, with Piri Weepu dropping to the reserves.



Sam Cane comes on to the bench in place of Victor Vito, and Ben Smith replaces Tamati Ellison as outside backs cover.



Coach Steve Hansen said Cane's promotion was because of Richie McCaw's haematoma on his leg suffered late in the match against the Springboks.



Hooker Andrew Hore has retained his place against Keven Mealamu.

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The All Blacks will break with tradition today and not have a captain's run at the stadium because of the travel required. It means Carter won't get to kick for goal at the stadium until the day of the game.



"I would prefer to get there the day before the game, but it's quite a distance and logistically it doesn't make any sense, so it's something I'll have to get used to but I'm not that worried," he said.

Patrick McKendry flew to Argentina courtesy of LAN Airlines (www.lan.com).