Gatland had no issues with sin-binned Lee Byrne and Gavin Thomas
Coach Warren Gatland has told Wales to improve their discipline in the wake of their 29-10 second-Test defeat to New Zealand in Hamilton.
Gatland had no issues with the yellow cards for Lee Byrne and Gavin Thomas, but saw Dan Carter kick five penalties.
"Dan's kicked a few penalties from 40 metres out and from our point of view there were a couple of discipline areas," said Gatland.
"There were two or three soft penalties that we need to look at eliminating."
The All Blacks led 13-3 at the break, but were 22-3 up within 15 minutes of the restart after three more penalties.
Byrne was sin-binned for a spear tackle on Kiwi lock Tom Donnelly while Thomas reacted to replacement lock Sam Whitelock's spoiling tactics late on and both were yellow-carded.
There were two or three soft penalties that we need to look at eliminating from our game
But Gatland said the actions of the pair did not rank with the tripping incident that saw Alun Wyn Jones sin-binned as Wales lost at Twickenham in the Six Nations.
"Lee has come and apologised," Gatland said. "It's one of those things that happens in a game. He lifted him off the ground and he's been yellow-carded.
"I don't think there's any malice in what he's done but you have to make him aware that he has to be a bit more responsible next time.
"The frustrating things are the dumb things that players do [to be sin-binned yellow cards]
"I can't accuse Lee of being dumb. In Gavin's case that's a little bit of frustration. It's the one we spoke about in the Six Nations - the tripping one - that's stupid."
As he reflected on losing the Tests 42-9 and 29-10, Gatland admitted a gap remains between Wales and the All Blacks.
He added: "There is a gap, we admit that. But we've got a massive amount of learning out of the last two weeks and that's what we keep saying about playing the best teams and coming to such a tough country to tour. For us and the future that's really positive."
All Blacks skipper Richie McCaw had mixed views on the game - after being unable to cut loose like they had in Dunedin a week ago.
"It was a bit frustrating. When we did hold the ball and get down their end it was penalties we were getting," he said.
"We just kept it ticking over taking three points but it would have been nice to build pressure and score tries.
"Just turning over the ball let them off the hook a bit which is a bit disappointing.
"Even though we conceded the try at the end and were put under pressure like that I thought we defended pretty well."