Having done my PPL, CPL and CFI check rides with Tim Tucker I had heard the stories of his Left Seat solo of the R22. Was aware that he would conduct the CFI examination and when back on the ground he would always ask the CFI examinee to reposition the Heli and shut down. When the pilot didnt start a shut down so he could change seats that would be the moment when a borderline pass became a fail. Not sure if it would be so much of a problem with aux tank loaded and a light pilot but still a point to remember when instructing and changing students.