Henson was faultless with the boot in Wales' 50-44 defeat in the first Test, hitting the target eight times in eight attempts with three penalties and five conversions.

The Neath-Swansea Ospreys star believes that has helped him stay in the starting line-up for the second Test, even though he has been switched to full-back in a team showing six changes.

And Henson, who suffered a stomach bug in the first Test build-up, believes a home supporter unwittingly helped settle his nerves by throwing a toilet roll from which he had to untangle himself.

He said: "I think I'm still in the side because my kicking went well in the first Test.

As I lined up my first penalty shot, that toilet roll wrapped itself around me. Maybe someone knew I'd had the stomach bug - and perhaps I should have used it!

"But it didn't put me off the kick. In fact the incident relaxed me a bit because it took the pressure off. It gave me a good excuse if I had missed that first shot at goal.

I'd been ill during the week leading up to the first Test and lost a few kilograms of weight and felt a bit weak out on the field.

"I was the first to have a stomach bug among the squad. It was probably a food bug from all the meat we have been eating."

Henson is not unused to the full-back role, having impressed there for the Ospreys last season.

But, while he is happy to fit in with coach Mike Ruddock's tour plans, he believes the number 12 jersey offers him a longer term future, as does Wales backs coach Scott Johnson.

"I've had a full season at full-back with the Ospreys and enjoyed it - and I'm comfortable there, he said.

But I think 12 could be my position in the long term. I've spoken to Scott Johnson about it and he feels I'm a 12."

Even so, the immediate future is Henson's biggest concern and he says Wales should bounce back following the disappointment of last weekend.

He said: "Argentina spoiled us a lot at the rucks last Saturday, but it's what we expected and it's poor that we didn't counteract them.

But no disrespect to the Pumas, I think the second Test will be different. We are pretty confident going into this game.

"I wasn't really pleased with the way things went for me in terms of general play last weekend. I didn't get the ball in my hands enough but it was a weird, stop-start game in which Argentina seemed to score tries off our defensive errors.

"When I got the ball in my hands a bit in the second half, we seemed to open up a bit more. At 10, 12 and 13, we were pretty solid in defence, as we had been against the Barbarians, but I didn't think Argentina were as good as the scoreline suggests.

"They took their chances in that period shortly after half-time and then we nearly pulled off the comeback. We didn't give up."

Having replaced Rhys Williams at full-back, Henson could also face South Africa in that position.

He wants to make a big impact - but without being involved in the sort of flare-ups that some of Wales' forwards have indulged in this week.

"I'm looking to step things up a bit personally because I felt a bit weak after my weight loss ahead of the first Test, he said. Then I accidentally kneed someone in the head during the game and came off worse, I think.

"Before we came on tour we had high hopes of winning all the games, but last weekend was a bit of a blip.

After going into the game on the back of a 42-0 win over the Barbarians, confidence was high and now we need to get back on track in this second Test.

"Training was full-on Tuesday afternoon, especially among the forwards. There were a few scuffles, but that sometimes happens in training with rival players competing for the same positions, but I'm glad to say my knee injury kept me out of harm's way."