Dog clutch skids on the leading shaft to rotate with it. All of the equipment to the layshaft is mounted with it.  When the still left-hand dog clutch is brought to skid into the still left with the gearshift lever, it messes with the clutch equipment, and also the higher-speed https://gearbox-auto21850.tinyblogging.com/gearbox-auto-things-to-know-before-you-buy-77814296