I built mine OOB a few months after it came out.
Fitting is not an issue on this model the only problem was a seam line on the canopy. You'll have to use some TLC to remove it without damaging the whole thing.
It builds to a nice model OOB but it isn't 100% accurate, manly on the interior. There are sevreal update kits, photo etch and resin (Eduard, Part, Cobra Company and Verlinden) to improve the flaws.