String chubs are standard on PSE and Browning Bows.......You know there are other bow brands out there becides Bowtech, Mathews and Hoyt








String Chubs

Nothing dampens string oscillation like soft Dynaflex rubber. These unique silencers deliver up to 90% reduction in string resonance, with minimal, if any, speed loss. One of the most effective string silencers made. 2-Pk included with this bow package. Comes installed in string and ready to shoot.

[align=center][/align]Anyway, Check to see where it's placed it might be hitting the bus cable right where it starts to "Y" out. Try sliding it up or down.