Borussia Dortmund coach Jurgen Klopp has said his team needs more defensive stability, but assured fans that he knows how to solve the problem.
Speaking as he prepared to take on Borussia Monchengladbach on Saturday, the Dortmund coach said there were different periods in the development of a football team, explaining: "If you're not ready to accept some setbacks in your development, you don't have any chance of developing."
Despite scoring five goals in their two recent away matches, Dortmund only won a point as they conceded three goals against both Hamburg and Eintracht Frankfurt.
Klopp urged his team to get back to basics and explained they had worked on that during training. He said: "We have shown the team all goals in their development. Switching to defence was not bad, but one body swerve and we were missing the crucial centimetres."
The coach, whose sending off in the dying seconds against Eintracht Frankfurt is being investigated, said Borussia were still on the right track, adding: "We have created loads of chances against defensive opponents - the thing is that nearly every counter-attack ends with a goal against us. Not a lot is missing."
Saturday will be the first time Marco Reus has faced his former Gladbach team mates. The €17 million man said: "It's not a match like any other match. I had three wonderful years in Gladbach, I felt great there, made many friends.
"I am looking forward to the match, and we'll be trying to keep the three points in Dortmund"
The Germany international is fit to play against his old club despite a minor ankle injury forcing him out of the Frankfurt match at half time.
He said the team had discussed their recent problems, adding: "We have analysed our mistakes. Saturday is a re-start for us, and our fans will be behind us."
Dortmund, slow starters in their title-winning campaign last year, have fallen seven points behind Bayern Munich after five matches.