Hey Mac, it all depends on who and what you build for. If it's for fun I say just pop the decals on and enjoy yourself.
But if it does concern you, well, correcting the details can bring a whole new level of either pain, prid, and joy. For the most part ships aren't THAT hard to modify, at least the ships of the 20th century and later have fairly straight superstructures with very little in the way of the compund curves you see on aircraft.