I'm getting no spark in my rear cylinder. Bike still runs and drives but on only the front cylinder and its gutless. I've replaced ignition coils, wires and spark plugs. I also replaced the igniter/cdi box as I've read about my issue and that's what came up. Still getting no spark in my rear cylinder. Its single carb to v twin so I'd assume if it's getting fuel to the front cylinder it would to the rear as well. Anyone know any other solutions?