When I check the wire's on my elc, Downriggers with a volt meter one side reads the same as the black box but the other side is off. 585-685. When i adjust the box both downriggers readings will move.Any Idea's will be helpfull ,I know some guy's will say switch to braid but the black box came with the boat and i want to give it a good try. Both sides seem to fish the same. Thanks