The warning label that get’s installed on all ACBB turbos, explains not to rotate the hex oil feed pin when installing the oil feed line adapter fitting. A critical thing of importance for all of our ACBB turbos that have the hex oil locating pin. The pin can only be reinstalled if removed by the precision service department and would be done under the RMA process.
If the hex pin is rotated, it will break the yellow witness paint and show that the pin has been moved out of position.
Hope this helps!