Original poster: "by way of Terry Fritz <teslalist@qwest.net>" <Pomnept@aol.com> I observed sparking between the very end of the primary and the strike rail and applied two coats of polyurethane. To my chagrin , it kept happening although to a lesser extent so I put some plastic between . Looks bad though. Do any of you experienced coilers have a solution? Thanks, Robert Hanford