The series I've been waiting for! Being an aircraft noob, I'm really going to follow this closely. My masks arrived today and the paint should be here early next week. I was going to do it OOB, but after seeing this, I'm seriously considering such things as Green Stuff, wheels, and engines; this wikk be a lot of fun!
Jason, engine louvres are open on the ground. Aircraft engines are designed to be cooled at operating conditions; at altitude and fast airspeed. On the ground or taxiing, they require augmented cooling. Open louvres for prop-wash to provide airflow.