A productive day at the Circuit of The Americas, which was spent evaluating and comparing various aero components on both sides of the garage, and progressively adapting to the changing track conditions as the surface rubbered in. Both drivers spent much of the first session dialing in the set-up of the MP4-31 to the circuit's steep gradients and increasing track temperatures. Jenson concluded his running a couple of laps early for precautionary checks after an anomaly was detected in the power unit. The issue was quickly resolved by a sensor change and didn't affect any of the rest of the day's running. By the latter half of the second session, both drivers reported that the balance had...
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