I just built a MTB from a Schwinn swindler and a California motorized bikes motor, the carb was bad and had to be replaced. It idles right but when I am riding at low speeds the engine is really rough until I get it up to speed. Is this normal ? Also my cylinder crank has a oil leak and the gasket is wet looking. There is no compression loose or power loose what should I do? And lastly for the break in I am running 24-1 ratio, today was my first day riding it and I did not baby it at all. I didn't ride for more then 30 minutes at a time but I did wot for a couple seconds at a time. Is this OK? Thank You -Bradley