390 running-in period flameout

The throttle valve is damaged. When driving a Duke390 motorcycle, the flameout of the vehicle during the running-in period is caused by the damage of the throttle, so it is only necessary to replace a throttle. 390DUKE is a middleweight model of Duke's family. As the successor of the family, it fills the gap of middleweight. With its addition, "Duke" covers almost all displacement classes.