Christopher dropped a wheel off the pavement, but in making his correction he heeded our overarching advice: Don't panic unless we say it is time to panic.
Jenson Button struggled with front-tyre wear and his Brazilian team-mate Rubens Barrichello dropped a wheel over one of the kerbs, causing him to spin off the circuit into a tyre barrier.
The sister Audi of Lucas di Grassi, Oliver Jarvis and Loic Duval took third place, their first podium of the season, after they too had suffered a highly uncharacteristic error when a mechanic dropped a wheel in the pitlane, leading to a one-minute stop-go.
Sutil lost control at the high-speed uphill Turn Nine, running wide and dropping a wheel into the gravel.
But he dropped a wheel on to the white line on the entry to Turn Four, the Descido do Lago and ran wide into the run-off area, half-spinning.
Making an upshift with the paddles behind the steering wheel feels like directing a choir to drop an octave.
One actuator wheel alternately lifts each lever 10 mm to drop an impact bolt on the CFRP plate surface.
Since space in the boiler room is tight, Mr. Milster has decided to drop the wheel through a manhole in the sidewalk above.
Drop the front wheel back into the forks and tighten the quick release - not too tight, not too loose.
Drop the rear wheel back into the frame, easing the gear cassette back into the derailleur assembly.
