1UP writes: "Activision has issued a formal statement addressing the growing complaints over defective Guitar Hero World Tour drum kits, which have spread across the Internet over the last 48 hours since the game was released. Calling the defects "an isolated manufacturing issue," Activision contends the problem only lies with drums made earlier in the manufacturing stage, and promises a "drum tuning kit" that presumably will allow gamers to fix their drums themselves.
We have learned that certain drum kit controllers manufactured for Guitar Hero World Tour have sensitivity issues. We believe that these controllers are limited to ones in the earlier manufacturing stages. While we believe that this was an isolated manufacturing issue, we are stepping our efforts to randomly test our drum kit controllers so customers can be assured they work properly. In the event any consumers do experience problems with their drum kit controllers associated with sensitivity issues, Activision will soon be offering a drum tuning kit that will enable players to fully optimize their drums."