Like many AC/DC owners, I have found this game to be so frustrating at times, thank goodness that there isn't a sledgehammer in the game room. Some have even thought about selling it.
Instead of that, I was determined to "fix" what I feel are design elements that are impractically brutal.
Flipper rubbber - the red stock rubber is ultra bouncy, making it very difficult to control the ball. I changed it to black. Looks just as good too.
Pop bumper exit - As long as the ball exits the pop bumper area cleanly, it ends up hitting the small rubber post and not going SDTM. If, however, the ball bounces out of the pop bumper area, it tends to similarly bounce over the rubber post and represent a drain risk. I added a larger rubber post,
http://www.pinballlife.com/index.php?p=product&id=71
around the small rubber post in order to lower the chance of it bouncing out of the area.
Outlanes - Clearly the most brutal element of the game, even in the lowest stock setting. By measurement, they are 40% larger than the inlanes. To make the outlane roughly equal to the inlane, I added a rubber post,
http://www.pinballlife.com/index.php?p=product&id=70
next to it.
With these changes, outlane and SDTM drains are hardly eliminated, but are now manageable for a reasonably skilled player.
Trust me - put down the sledgehammer. The game is far more enjoyable once fixed.
Kevin