Stags trip up the leadersMacclesfield Town grabbed a priceless three points with a 2-1 victory at leaders Cambridge United last night.Jonathan Franks and Scott Kashket both scored to hand the visitors a deserved win that was a real case of fourth time lucky in the promotion race.The three points saw Macclesfield leapfrog Northampton Town into 11th place.It was a strangely goalless first half as United, buoyed by beating Exeter on Saturday, dominated the early stages with their tireless attacking game.The former Stockport man was often guilty of not closing down the right flank but he