The carb has no gasket at all and that is probaly the source of the air leak. I'm transfering the motor to a new frame that's smaller tubbing so it will be easier to install. The reason for this is the back end of the frame is not even. The back wheel wont line up properly at the bottom and the top by the brakes. If it's lined up at the bottom it's off center at the top. I tried different wheel's with the same result..There doesn't seem to be any damage to the frame that I can see...