Button to attempt return to form with Hamilton's setup
McLaren Formula One driver Jenson Button of Britain gestures inside his garage during the third practice session of the Canadian F1 Grand Prix at the Circuit Gilles Villeneuve in Montreal June 9, 2012.
The former world champion's 2012 form slump hit a low recently in Canada, where he was lapped by the sister McLaren.
Since then, he told reporters in the Spanish port-side F1 paddock on Thursday, "I've done a hell of a lot of laps in the simulator with this (Hamilton) setup."
The Briton, who won the season opener in Melbourne but now has just over half title-leader and Montreal winner Hamilton's points tally, said he is confident the change of direction will work for him.
"We do have a good understanding of what went wrong, but whether we've improved it for this race we'll have to wait and see," said Button.
He is refusing to write off his title chances.
"It's the strangest championship, still a lot is possible," he said.
Nonetheless, having admitted to being "confused and lost" after Canada, Button acknowledged that there is unlikely to be a silver bullet solution for his return to form.
"We do not have all the answers to all of our questions," he is quoted as saying by Germany's Auto Motor und Sport.
Why not simply return to the settings of Australia, Malaysia and China, where he always either qualified or finished first or second?
"If only it were that simple," Button answered. "The car has changed a lot since then."