In most cars, the synchromesh units usually are not fitted to all the gears. They are really equipped only on the highest gears. Reverse equipment, and often the main gear, do not have synchromesh gadgets. Mainly because they are intended to be engaged when the car is stationary. Synchromesh gears https://trentonluyeh.theideasblog.com/34138544/getting-my-gearbox-to-work