Red Bull will change its pit-stop procedures during the Monaco Grand Prix on Sunday amid concerns that rival Ferrari was doing copy-cat stops during last week's race in Spain.
Red Bull team principal Christian Horner claims Ferrari was mimicking Red Bull in Barcelona because it appeared that two-time former F1 champion Fernando Alonso was pitting for Ferrari immediately after Red Bull had called in Mark Webber.
Horner says that ''Ferrari's only way to beat Mark (in Spain) was to cover him in the pit stops'' and ''we've just changed our procedure to be less transparent'' in Monaco.
Defending F1 champion Sebastian Vettel of Germany aims for his fifth win of the season in Monaco. The Red Bull driver already has a commanding 41-point lead over Lewis Hamilton.