To Three Wire:
Three Wire, I've had a look at your link - heart-breaking to see all those perfectly good Spits going for scrap in Oz - but then we must have been doing exactly the same in the UK at that time. Why didn't I buy a dozen or two as an investment? (but then where would I keep them!)
There is a first-class shot of an A-35 in your link. If you can find a shot of an A-31 somewhere from exactly the same standpoint, it's just possible to detect that the wing has been shifted to give a 4 (?) degree A of I. - but you have to look really hard to see it.
Thanks a lot for this - and the kind words!
Danny42C