(Reuters) – Manchester City need to harness the pain they are feeling amid a poor run of form and use it to get their Premier League campaign back on track, defender John Stones said after Wednesday’s 1-0 defeat by Aston Villa. Villa dominated the game from start to finish and secured their first victory over City since 2013 thanks to a deflected shot from Leon Bailey in the 74th minute. The result left Pep Guardiola’s team fourth on 30 points after 15 games – six points behind leaders Arsenal – and without a win in their last four league matches. City last went four Premier League games witho…