I got those models too for a real bargain from my retailer. If you live in Germany those models are very cheap. Here in the States they are a bit expensive but, you get your money worth. I also got the Lufthansa 747-400, it's a real gem.
A friend of mine notice that if you look the model from the front you notice that it's not symetric. I just stopped looking my plane from this side. I do believe that they should work on the plane's nose...it needs work.
Happy collecting
