The owners of X4650 say the composite seat taken out of K9942 is original and was sat in by James Nicholson when he was with 72 Squadron. My question is would K9942 have such a seat when she was manufactured?. Would she not have had an early metal seat?. I would have thought that the composite material seat would have been fitted retrospectively AFTER 1940, at a maintenance unit during overhaul and upgrade. I could be wrong though.