Jenson Button said there were positives and negatives to be taken from McLaren's upgrades at the Spanish Grand Prix, but is not expecting his team to make a leap up the standings. After a difficult start to the year, McLaren brought a comprehensive upgrade to the MP4-28 during Friday practice but still struggled to trouble the top ten. Button said he hoped there was more to come but admitted there had been unforeseen issues with some aspects of the new parts. "There are some positives to the balance of the car and there are some negatives," he said. "The problem in this sport is that you've got to move forward in every race. We have moved forward but I think everybody has....
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