Watch this video for a very, very, VERY simple way to fix your cymbals so that they will be more sensitive. All you need is a screwdriver and some tape. Any kind of tape will do; masking tape or electrical tape. We actually used electric tape and it works fine.
Thanks to duffman3 from youtube.com for coming up with the solution and taking the time and effort to make this video. It was really, really helpful!
Thanks also goes out to Servo101 from Pinoyxbox for finding this video online and posting it on Pinoyxbox.com to help other users in the community who recently bought the Guitar Hero World Tour Band Set.