brimforge said:

ah well, that solves some questions, so only one turbine is "wrong" ;-)

but about that ring, it is correct and slightly moved, meaning unlike in the screenshot of the game X-Wing, the turbine front is not a clean circle (but it would be if the bottom rim was as broad as the top one)

Heh, I see how it reads that way, brimforge. Just to confirm, I meant that *both* 'turbines' are equally wrong in those shots of course. ;)

As far as the 'circular rims' of the turbines go, they *aren't* a perfect circle as you say...although I've seen some X-Wing images where they are wrongly shown to be. (I actually amended my last line in the post you quoted, to clarify that various 'google' images of them seem to vary)

But here's an image which gives a decent look at how the top and bottom halves of the 'circular rims' are intended to be slightly mismatched with each other - http://img3.wikia.nocookie.net/__cb20150309054138/starwars/images/b/b2/X-wing_2_Fathead.png