Azerbaijan GP will present true test for DRS fix

At the Spanish Grand Prix world champion Max Verstappen saw his final push lap in qualifying ruined by a malfunctioning DRS flap, which made him abort the lap.

While Red Bull thought it had found a quick fix between qualifying and the race, the problem reared its head again on Sunday, hindering the Dutchman on his way to an unlikely victory after erstwhile leader Charles Leclerc retired.

Ahead of the Monaco Grand Prix, Red Bull’s engineers threw themselves at the problem to…