Sauber to address F1 pit issues after second disastrous stop

Valtteri Bottas lost almost 50 seconds at his second stop in the Bahrain GP with a cross-threading issue at the front axle. 

In last weekend’s Saudi Arabian race, Zhou Guanyu was delayed by a similar problem for around 25 seconds when he pitted.

The Chinese driver was one of only four drivers not to have stopped when the safety car came out, and despite having to deal with some cooling issues he was on course to finish 11th.

Team…