Haven't given in, just been busy with other stuff.
Something I've noticed in the orthographic's that I'm working from is that even the the saucer outline matches up, other parts of the ship don't. The secondary hull isn't so bad, it's just a bit higher up in the front view than the side, but the ventral saucer is an odd one.
The rim fits fine, but the sensor area is bigger on the bottom ortho than on the front or side view.
After a bit of a play, I've found that it's a similar thing with the NX Intrepid:
The side view seems to be way off.