
Very difficult to assemble which makes it not work properly once assembled. You could really learn from LEGO via instructions. I'm an engineer and I've spent most of my career following instructions. After carefully inspecting the finished product, we discovered that one of the main parts was upside down and needed to be disassembled to fix the problem. I will say that after the repair it was pretty cool and the kids love to play with it. My only words of caution: plan on doing this with your child if not for her, and a little Elmer's glue in a few key spots is needed to make it work long term. Good luck and have fun.

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