Quoted from wonderpuddle:I had the same problem on my machine -- routinely the right sling launched balls over the left sling and into the left wall. It even knocked the left spotlight out of alignment and knocked the LED out. While putting the LED back into the socket, I think I identified the cause of the issue. I'm not positive, but I think it is a simple quality control issue.
Can you take a look at the posts under your sling? It looked like on my machine that the right post was installed upside down:
http://www.flickr.com/photos/52811814@N00/9266764482/
http://www.flickr.com/photos/52811814@N00/9263988081/
I can't imagine this is the way the machine was designed to play. So I am assuming this common issue is just Stern QC. I have flipped my post and the game plays the way I would expect it to now:
http://www.flickr.com/photos/52811814@N00/9263985025/
Hard to believe there were 9 posts after this one, and not one of them addressed this. Yes, it looks like the post was installed upside down. Unbelievable! You're lucky you didn't get a ball stuck under the sling plastic!