Metrics can be your friend here. If you can demonstrate a higher failure rate, lower productivity, higher staff turnover, lower staff engagement, poor collaboration with other parts of the business, low standards, poor processes, lack of training etc, these will determine specifically where the problem lies.
Then look at reasons. Management style, lack of communication, poor leadership, unclear tasks, understaffed, poor equipment, no metrics of the staff productivity etc. This will point you to a solution.
Be solution focussed - this is why you have been employed.
Splash