i have yamaha U7E, the build date is 08/74, i am looking for 1st gear, the kick start shaft, and the main shaft. tooth count on 1st gear, 39 teeth large gear, 27 on the small side of the same gear. the main shaft has 12 teeth, this bike was given to me and is in very good condition, save for the trasmission parts. thank you John Devers.