rbs6nations.com > France
France produced a dramatic comeback to beat England 26-24 in Paris last weekend but Saint-Andre has still opted to tinker with his starting XV.
One of the three changes sees Dimitri Szarzewski, the hooker, promoted from the bench to start in place of Benjamin Kayser.
And Mas, whose side were beaten in Rome in last year's encounter, knows France's pack will need to be at their top of their game to avoid a repeat.
"The scrum is one area where they come together extremely well," he said.
"They have a pack that knows their roles perfectly. And they are very good players, including (Martin) Castrogiovanni and (Leonardo) Ghiraldini.
"They must work this area a lot, they love it, they excel in this, and their coach likes it too.
"I have bad memories from last year of course; it was bad. I had not been sparkling. Against the Italians it is always complicated.
"It would be pretentious to fall into the trap, to get ahead of ourselves. We must remain humble: we only imposed ourselves with three minutes to go against England."