Listen to this article Mercedes’ 2022 challenger is unchanged for this weekend’s returning Melbourne race compared to the previous event in Jeddah, where the Silver Arrows squad was further behind pacesetters Red Bull and Ferrari than it had been at the season opener in Bahrain. The W13 is suffering with severe porpoising at top speed, plus considerable extra weight and drag issues, which has left Mercedes with a highest qualifying position of fifth for Lewis Hamilton at the first race. The team is confident it can unlock better pace from the W13 – it is also struggling to find a set-up sweet spot – but Russell explained that it is waiting to fit parts it has “total faith and confidence they will do as we expect” rather than bring experimental updates to every race in a bid to cure its current ills. “We’re a long way behind Ferrari and Red Bull,” Russell said in the pre-FP1 press conference at Albert Park on Friday. “We were probably further behind them in Jeddah, and we understand why. “But obviously I think when we …