The buck roar
 

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