I picked up the purple Animated Shockwave at Target today and it seems to have a real problem with pieces falling off. The head feels really loose also, not sure if that's normal. But there's a movable piece behind his head that keeps falling off everytime I move it. It's almost like it's not settling into the holes when I reattach it. Anyone else have this problem? I'm also not sure what the point of this piece is. The instructions are a bit confusing for me because he started off in robot mode, and the instructions are in reverse, and I can't seem to get him into a decent vehicle mode. Tips?