"Like everyone said, this chopper does not work, but what disappointed me was Lego's responses to the various comments above. They are not accepting the problem reported but instead blaming the customers for lacking practice. No matter what practice you do, this chopper will never ever fly since it does not have back rotor. It is too heavy to lift itself in the first place but even if you pull too hard and remove the lego character to make it lighter, it will spin uncontrolled way. There is a reason real choppers have a rear rotor. The movie Lego displays is bogus. They have cuts so that they do not show how the chopper does not work. I wish I had read the above comments before buying. I also wish Lego, such a big company, listens to the comments from the customers and owns the design problem rather than deny and ask for practice."