Hello Pete,
first thanks a lot for your quick reply on that!
I just gave it a try against FSX (standard, no Steam edition) and it did not work either to read the correct value back from offset 0B64:
I always get "0" although it was set to "1" (and the panel has failed).
So this really looks like a bug (in FSX and your documentation ;-) ) as only write works, but not read.
Although I don't think Lookheed Marting will do much about it in near future, I would at least like to let them know:
do you have a direct way of reporting such bugs or should I just post things like that in their forum?
Best regards and thanks for your quick support again
Andreas