EpicMindvolt

My mom found this set at Bargain Hunt for $99 yesterday. It was brand new but very damaged, and it had all the pieces with it. I built it today and it took a while but I finally got done. Once I finished, the gondolas started hitting the 8x8 net plates at the bottom on one side. I took it apart to try to fix it, and when I put it all back together, the gondolas started hitting the nets on both sides. Anybody have any idea what I've done wrong or have any solutions?