 Complete the following phrase:  For 1961, Salvadori moved to Reg Parnells Yeoman Credit Racing team as partner to John Surtees, competing in five Grands Prix and achieving three sixth-place finishes with the teams 1.5-litre Cooper T53-Climax. The Cooper now had strong competition in the form of Colin Chapmans Lotus cars, but Salvadori was catching Innes Ireland for the lead in the 