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Christian Horner says that next week's test in Bahrain is 'important' for reigning champions Red Bull.
Red Bull completed just 21 laps in the RB10 at the first test at Jerez due to issues with the cooling on its car, a situation which was exacerbated by Renault's problems with the new power unit.
"Well obviously there's quite a bit to do but there's still a fair bit of time before the first race and the Bahrain test next week is an important test so obviously everyone is working very hard at Renault and in Milton Keynes," Horner told Sky Sports News.
"We don't want another week like Jerez but that's what testing is for; you sort your problems out in...
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