I own the buck roar and I was looking at it. I took it apart and the part that the air goes against and it rattles, there is a o ring where you can change the setting. What's your setting on it and how does it work?
I have mine set on TB I believe that means testosterone buck I would leave it there or on MB (mature Buck) watch the video If yours did not come with the dvd check it out on Primos' website
The buck roar 
Hybrid Mode
