Domingo, after you get all the clutch plates and steel plates arrange the way you want them make sure and use the axles installed all the way into the center of the posi and side gears(both sides at the same time )to align and hold the plates in place before and during when you tighten and torque the case bolts up Make sure the axles SLIP in and OUT easily before installing the posi and third member into the housing Trust me on this one