Grayson said: "The tie is finely balanced. We are a goal behind, but we are capable of turning that around. We have to remain positive because we passed the ball around well and created some good chances.
"It will be interesting to see what tactics Carlisle adopt in the second leg. Will they sit back and try to defend their lead? We have to make sure we don't concede an early goal and that we are hard to beat.
"We haven't won in the last three games, but we have a group of players who are working hard to put things right. We will go to Spurs in the FA Cup on Saturday and enjoy the occasion."