the mechanisms go in very easily
running the control rods and bending the music wire legs so they fit just right is the pain. I set my mains up so the axles were even with the leading edge. I bent the legs about 2/3 the way down to do this. Probably the hard way to do it but I did finally manage to get them even and true. The DB music wire bends pretty easy out of the box, so after you get it set just right reharden it and save yourself a lot of grief. And the wheel wells........cant explain .
you'll see, the balsa is the best way to go, the styrofoam was impossible for me to manage.
John.