Mark Webber says he is not unduly concerned by the reliability problems he suffered at Barcelona on Thursday, after a gearbox failure cut short a race distance attempt in the morning.
The Australian insists that Red Bull Racing's ambitious targets always leave it wanting more - but he remains confident that recent title-winning form bodes well.
"We have a few plates spinning but that is how Adrian [Newey, tech chief] likes it at this time of year," he said, after completing a race distance run in the afternoon.
"I remember years ago we never had a reliable car, and we seem to have scored a few points in between. We are working away and doing our best."
Webber says that ideally he would have liked to complete more than the 97 laps he did, but still thinks there was reason to be happy with how things are going at the team.
"We could have done a bit more, but everybody is in the same boat," he explained. "You always want to do 20 or 30 laps more each day but, in the end, the guys have worked incredibly hard and done a good job. We need to focus on tomorrow now.
"In Jerez I felt comfortable in the car. Today, we didn't have the smoothest of days but there are still loads of positives to look at. Obviously we are a very ambitious team, and we want to keep improving."