Quite right, Tourist. The point is that aerospace technology has moved on so far that engineers (and I don't doubt they had/have some good ones) can no longer knock up a part and replace something.
And I like your post grading system. Could you add:
I CAME OFF MY MEDICATION WHEN I CLEARLY SHOULDN'T HAVE DONE.
There is nothing wrong with the ordinary Iranian people. Yes, shrug off the yoke (like it's that easy) and they will be a good country.
M2