I’m stumped here. I have an 85 200x with Mikey's upgraded 30mm carb, but the stock exhaust. He said it was fine to run the stock exhaust on it. I plan on buying a new pipe later, but my question here today is. Why Is it running so rich? I guess it's running rich. Usually, black smoke means rich, blue means oil, and white means coolant, but that's literally impossible since there isn't coolant, lol. It fouls plugs, but every three-wheeler I've owned does it. When I got the carb about six Months ago, it had a 110 main. It ran rich, which is odd considering the carb's throat is bigger, but now it bogs if I slam the thing to full throttle. I've taken the main down to a 100, and it's still doing it. Do I need to go lower? Do I need to drop my pilot jet size? Am I missing something here? The only other things done to the engine are a 12-1 wiseco piston and the carb. Another thing I notice while idling is that it seems like there is condensation building in the exhaust??? You can visibly see water droplets at the end of the exhaust.