I just finished building my first bike, the beach cruiser with a 66cc engine. Not sure what kind of carb it has other than its very simple with just a throttle cable coming out of the top. I took it out tonight and found it works very well until it get warmed up and than it bogs down at high speeds and feels like its going to stall until I let off the gas a little. I tried reaching down and giving it more choke but that made it worse. Do you know if there is suppose to be a gasket where the carb attaches to the manifold? Could this be an air leak or does the carb need an adjustment. I live in Florida. thanks so much