Thanks for the link, Isaac
I guess that the pictures came from a small movie in YouTube:
https://www.youtube.com/watch?v=pVFclGYU-UY
The flaps are not as simple as they may look!
The Answer kit represents the second version, with a dual chamber rocket. The movie is about the first version, with a three chamber rocket. I was a bit surprised to see 3 exhausts in the movie and just 2 in the kit but Wikipedia put the record straight...
The cockpit section is the trickiest part of the kit. There is a joint in the fuselage skin, just in the middle. The cockpit walls have cuts for the fuselage formers but I found it almost impossible to keep the formers and still get a decent joint on the fuselage. The solution was to cut the upper part of the formers and to put inside tabs to link the forward and rearward skin sections.