From the factory, mine came as follows:
On the left outlane: left side is 2nd from top, right side is at the bottom
On the right outlane: left side (or top section) is second from the top, right side is at the bottom
I don't find the game that hard, until I get to Alien Invasion, which in ten years of ownership, I've never been able to complete. My high on the game is 143 million, but that was years ago. I recently scored 111 million. I never tire of this game.