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     The KEY CONTACT CLEANER will clean normal contacts with one pass!  Old contacts should only require a couple passes.

     If your key makes intermittent dots or dashes after they have been cleaned,  check for misalignment of the contacts,  loose screws on the key or a wiring problem.  An Ohm meter connected to the plug will help you determine the problem.

     If your contacts are too close together you will have to loosen the adjustment screws. Place the  Key Contact Cleaner between the two sides of the contacts.  Push the contacts together with light finger pressure and pull the cleaner strip between them.

     You can trim the strip with a razor knife to get into a tight place.  The abrasive will dull the knife edge quickly!