As the shift rods are being installed, the shift forks on both rods should be put on the rods. The hole on the back of each shift fork needs to line up with the hole on the rod and then the roll pins can be reinstalled to attach the shift fork with the shift rod. Also, remember to install the plugs over these pins, otherwise the case will leak oil. The two ball bearings that were removed before can also be installed at this time in the holes on the top of the transfer case. Make sure they drop into the detents on the shift rods, and then install their retainer bolts with their springs.