I replaced the carrier (the rubber was in bad shape) along with the flex disc (had a couple small cracks in them). Pressed the new bearing into the new center support, installed the flex disc on the driveshaft halves, mounted the front half on the trans yoke loosely, slide the rear half into the splines making sure to keep my paint marks aligned and then mounted the rear flex disc loosely. Install the two bolts for the center support, but didn't run them all the way down. Tightened the front and back flex disc. Rotated the driveshaft a few times and then tightened the spline nut. Tightened the center support bolts making sure that it went up evenly.