I just did step 4, which was just as tricky as step 3. The sidepods are just so difficult and also the airbox and the upper part of the nose cone are a bit tricky. I had a lot of trouble with the airbox, especially part 14. I didn’t see the point of adding part 14, so I just ignored that bit and eventually it turned out fine. Here’s a picture of the car after step 4:
