By Sue Crawford After a decade of good behaviour, Corrie’s former man-eater Tracy Barlow is set to play away again as she has a steamy affair with hunky ex-footballer Tommy Orpington. But for actress Kate Ford, swapping Tracy’s usual dowdy onesies and turning up the heat in her fifth decade is proving no mean feat. The mother of one says: “It’s not easy turning on Tracy’s sexy side – that’s difficult for a 46-year-old woman. I’ve got to be honest, I think that’s a lot less challenging to play in your 30s… I’m trying not to be too vampy with it, because that would be a bit too much.” Since Tr…