6: These two parts (part nr.
5a & 5b) must be glued on
top of each other and will
be used as reinforcement.
(bulkhead) Same goes for
parts 7a/b and 12a/b.
7: Here you see part 5a/b
glued inside the back of
part nr.4.
8: This is part nr.6 with nr
7a/b inside. Notice the
shape of this part. It is half
rounded at the front and
square at the rear.
