I picked up one of these used from a member on here and it vibrates a ton imo. Did you make them all same durameter etc? I expected just a little vibration. Makes car sound like has loud leaking exhaust lol
If you hold one side firm, and let the other side be soft/stock, the drivetrain will move on that side, and that movement now has to be stopped by the TTR side, causing vibrations. If you hold BOTH sides firm, it cannot get the movement, nor build up on the vibrations.
Mounts are best when you have both upper, supporting both sides. The lower rear also helps, and should also be used.