Here is one for you inmate, on 412's, the original collective lever had top written on the bottom!! To install the collective lever correctly, the word top had to be facing down. Just like the debris monitor on the 412. It has to be installed so that the data plate is upside down. Makes things interesting when you look after a fleet of different types, with similar looking parts!! Would be nice if manufacturers would sort out this sort of stuff.
noooby