Puppy clutch skids on the leading shaft to rotate with it. Many of the equipment to the layshaft is preset with it.  When the left-hand Puppy clutch is introduced to skid on the left in the gearshift lever, it messes with the clutch equipment, plus the upper-velocity gear is accomplished. https://charliemtxae.oblogation.com/33318756/5-tips-about-gearbox-auto-you-can-use-today