Originally Posted by WhyFi

My son has that set. When he got it a year or two ago, he was mentally capable of putting it together, but his finger strength wasn't great. As a result, the further along he got, the more things starting to become misaligned as the tiny gaps added up. At one point, a section fell over and, because it wasn't put together firmly, it just exploded when it hit the ground. That was when I had to step in.