But the Railwaymen have accumulated 11 points from their last five games to climb within four points of the play-off spots.
"I've always felt the team was decent enough to be challenging for the play-offs. We haven't proved it yet, although we are working hard to achieve that," said Gradi.
"We've just got to try to keep picking up points. We've made mistakes before and let in a lot of goals, but if we can tighten up at the back we'll win games because of the players we have at the other end."