'93 civic ex coupe 1.6 v-tech, has aftermarket msd ingnition and msd blaster coil, msd dist cap, wires and platium plugs. have continious problem with a greenish film of corrosion forming on contact tips inside the cap that meet the rotor, on the end of the rotor button and will build up to the point it will seize the coil contact carbon stem inside the cap to the cap housing. Corrosion is so bad it will not start until cleaned from areas and will re-form in less than 100 miles of driving. Have tried silicone dielectric greases, anti corrosion grease to no avail. Any ideas or help much appreciated...Thanks