[Rick Parker]

There are some black plastic pads under the fly weights that they slide on. Sometimes these get worn out and need to be replaced. To prevent the wear between the the cap and rotor be CERTAIN the spring blade on the top of the rotor is contacting the center button. Use a little dialectic grease as a marking compound if needed. If it is not touching, arcing will take place and excess wear will create the aformentioned dust in the cap. It will also put additional load on the secondary ignition system. Brake cleaner and compressed air will remove the dust.