[Punisher454]

I think it makes perfect sense to vary from the studio modeld on the smaller greebles. You are working at a much finer scale than the physical model was intended for. What I like is that at far and medium distances (like the original was filmed at) you cant really tell any differences on your model vs the studiomodel. But if you zoomed in on the studio model very much (especially now days with high definition) you'd see glue spots, and plastic parts that didnt fit the hull exactly, all sorts of UNWANTED details. The fine scale of your greebles would easily allow camera zooms starting at extreme distance and moving all the way into people in the windows or individual hatches.
Dont get me wrong, I have total respect for physical models, but there are some things they just cant do. To try and duplicate them TOO closely would cause the CGI model to inherit the same limitations.