I've notice a noise in the back end and was wondering what it was. If you watched the dydo cup, when Robert Smith was throwing the ball there was a ton of it, and then just recently at the Denny's High School nationals, there was that noise again, but this time with a different ball manufacturer (Smith's Storm and Buckert's ebonite ice). I seem to be getting this with my radical inferno in the back end when I play inside. Anybody have any ideas?