I just remembered my Kyosho Stinger blew the gears out like that. I went to my LHS and got a new clutch housing and spur gear. The new spur gear was steal instead of plastic , the only down side was all the shavings from the aluminum cluth gears spraying all over the car. Did you have to buy the gear set or was it the two differant throttle gears and clutch gear? That "Flower Cover of Bumper" is # 02077. Like I said , I'm hoping its the wide front bumper. One more thing , what is that bag of plastic clips for ?? I looked all over and am clueless to where they go.