i built academy uh-60 mostly o-o-b, i scratched some details in the nose, those windows are large and you can see a mass of open space if you don't do something there. i pretty much invented some details. at the time i had no internet or refs.
the main addition was the bulkheads, just sheet styrene with holes drilled in it, and a few misc. details with no particular purpose other than filling space.overall though, it's a nice kit.