Mercedes technical director James Allison believes the team have had to pay the price for 'overstepping the mark' with their gearboxes. Lewis Hamilton suffered a five-place grid drop at the Austrian Grand Prix before coming home in fourth place. Team-mate Valtteri Bottas suffered the same fate at Silverstone, but he was able to rescue a Merc one-two finish with a little help from Ferrari and their punctured tyres. And Allison has revealed that the change to a new gearbox was needed after pushing the old units too hard in their pursuit to stay ahead of the Scuderia. ''We try to put it on the track as much as we can, but the opportunities for track running in a risk-free way are limited,'...
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