I have a 84 Honda 200es I've been trying to bring back to life. I've got it running but it bogs and backfires about half way through each gear even in neutral (basically no power in 4th). I've replaced the carb, spark plug, drained oil multiple times because it had gas in it. Anyone have any ideas of what o should do next. The atc barely smokes so I think those motor is in okay shape.