My new DLE 30 was running fine on Saturday, once I got it started, which took a bit, but would not run on Sunday. Would not fire. Checked the plug and saw no spark at all. Then noticed two wear spots in the plug-cap cable, worn down to the copper (it appears). I wrapped the first 6" with electical tape, but still no spark. Would these open wear spots cause electrical interference and prevent a spark? Is that why this cable is wrapped in a metal material? (I thought it was to prevent wear). Also, anyone have suggestions on how to prevent cowl-wear in these cables? I already had it wrapped in that split-platic wrap provided. Should I pre-wrap it in electrical or duct tape, too? Thanks.