Ah, bad luck! That must be blimmin annoying.
Think that one probably was the most effort for me, yeah. I attributed it to knowing nothing whatsoever about engines beforehand, which I'm intending to correct now (post the event, very sensible, as usual...
) by deconstructing an internal combustion engine with someone who is extremely geeky and likes fiddling around with cars.
Maybe if you could find a way to have a look at a real engine and get a bit of context?
Hey, at least it's a more interesting one to keep re-sitting than Air Law....