Valtteri Bottas said he raised concerns about Mercedes' pit stops ahead of last month's Monaco Grand Prix which saw the Formula One champions fail to remove a wheel from his car, forcing the Finn's retirement from second place. Bottas, whose arrival in Azerbaijan for this weekend's sixth round of the season was delayed by travel disruption, told reporters on Thursday that what happened was not a complete surprise. The stuck wheel was eventually removed at the factory in England some 43 hours after