Brocks 14" Alien Head on Gen 1


After installing my brocks alien head full exhaust the muffler is vibrating the bike. I do not have factory rear sets I have aftermarket rearsets. Has anyone fixed this problem?
That's one of the main reasons I sold mine. I run factory rear sets.
Does anyone know where i can find another black rubber grommet for the factory rear sets so when I buy it I will be able to install everything?