I ordered this set of bits and was lucky enough to use them straight away. The smaller piece dangled a bit, but the springs seemed to control most of the noise. It was not possible to eliminate vibrations by making a subsequent cut, since the bearing allowed a small amount of material to be removed and additional cuts would make one part thinner than the others. A larger bit created more noise, so I used multiple passes, which minimized the problem. Unfortunately, on the final pass, the bearing