[tatter06]

I have been testing some nsr shark 20k/21.5k motors for the Wales and West races and I have one 21.5k motor in my batch that is fairly quick but vibrates noticibly more than the other motors. Is there anything I can do to smooth it out, I don't really want to throw out a quick motor at £15 a pop but it vibrates so much I'm sure it won't be very driveable. The w&w rules mean I can't open the can.