Dont worry about the injector readings too much,just remember they take into account the physical condition of the engine aswell as manufacturing tolerances in the EUI's themselves.The ecu just alters the injector duration to try to get each cylinder to make the same amount of progress on each firing stroke.
What does the airflow meter read at 3000rpm with the engine hot - running free ? It should be approx 330Kg/Hr - any less and the engine will not make good power.