Pitts, on the subject of shaft age, I'm not sure why you suspect it is particularly old. The first Bristow machines were delivered in 2005 so their shafts were probably built in 2004 so would be close to twice the calendar age. Whilst CHC overhaul their own MGBs at HeliOne (and so get the same shafts back from overhaul) Bristow uses power-by-the-hour so without checking the log cards I couldn't be certain that we have older shafts, but I would strongly suspect so.