Stik, I was going to say something about Death Valley Sense of Humour (i.e. drrrrry) but thought the better of it.
I flew with Alan several years back and loved it, but felt slightly intimidated by the amout of stuff I did NOT know about aerodynamics. I too learnt loads from just one ground critique session at Sherburn. Never occurred to me that an aircraft with differential ailerons will suffer loads of adverse yaw when rolling from the inverted

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