Hearts don't seem to have any trouble finding more problems as each day passes. the latest bit of bad news to hit the Tynecastle club is that attacking midfielder Ryan Stevenson could be out of action for as long as six weeks. The former Ipswich forward hobbled off 15 minutes from the end of Saturday's 4-1 loss to Dundee United after pulling up with a hamstring problem. Following a scan on Tuesday, today saw manager Gary Locke's worst fears confirmed when it emerged that a torn hamstring means another spell on the sidelines for Stevenson. He has already missed two months of action with a knee injury and his lay-off leaves Locke with just two other players older than the administration-hit club's squad average of 22.Locke said: "It's a massive blow for us and for Ryan. He pulled up during the Dundee United match last Saturday so we decided to send him for a scan to get to the bottom of it. We had a niggling feeling that it was something serious and that was confirmed when the results came back. There's a tear on his hamstring so he'll miss the next four to six weeks, which is less than ideal. It's a shame for Ryan as he's not long returned from a long spell out. One good thing though is that the lad is a quick healer, so hopefully he gets a bit of rest and then we can manage his return."