All Blacks sharpshooter Dan Carter is backing himself to break out of a rare goalkicking slump – hopefully in time for Sunday's test against Wales here.

Carter's kicking stats on this tour have been low by his lofty standards.

He kicked three out of six in the win over Australia in Hong Kong. He slotted a late conversion from in front when he took over kicking duties in the win over Scotland. Last weekend against Ireland he was down to three out of six again, leaving him with a success rate just over 50% for the trip.

Fortunately, with the All Blacks in dominant form, they haven't had to rely too much on Carter's boot to get them home.

He's working hard to sort things out and certainly isn't letting the rare blip get to him.

"It's been a bit scratchy but it's nothing I'm really worried about," he said of his goalkicking that has often proven a saviour for the All Blacks.

"Obviously it's disappointing and frustrating that I'm missing the odd kick. You go out there and try and kick them all.

"I will be continuing my routines and my practice sessions as usual. I have been putting in a lot of hard work on the training paddock and I'm a firm believer that if you put the practice in you get the rewards."

All Blacks backs coach Wayne Smith is equally unconcerned, backing Carter to come right.

"He was kicking really well at our training session and he's an utter professional so I don't have any worries," said Smith.

The All Blacks other touring goalkicker Stephen Donald has been more consistent with a 75% success rate. But after slotting four from five attempts against Scotland, he got the wobbles against Munster, missing three shots that could have proven costly but for Joe Rokocoko's late try that nailed the 18-16 win.

Both kickers have had to endure strange kicking conditions over in these parts where goalkickers – even opposition goalkickers – are granted absolute silence from the massive crowds. It's an eerie atmosphere and quite unlike the New Zealand environment where hostile home crowds regularly boo opposition kickers.

"I quite enjoy it," said Carter of the silence. "You actually get the odd individual remarks called out that you hear. You don't normally hear remarks when you kick but in that situation you could.

"It's something pretty new and quite different to be honest. With the booing you block it out and want to kick them even more. It doesn't really bother me."