Fiat Yamaha Team riders Valentino Rossi and Colin Edwards are faced with a difficult challenge for tomorrow's Malaysian Grand Prix in Sepang after struggling during qualifying this afternoon. The team worked hard throughout the day to rectify the lack of grip from which both riders have been suffering, but they were unable to find a competitive package and the pair now face a daunting task for tomorrow's 21-lap race when they start from ninth and thirteenth positions.