All teeth look good, add oil and go. New diff cup has a half TANK on it. I noticed that my front brakes weren't working so I brought it over, and the diff wasn't working, wasnt crunchy or anything, just not working, I thought I blew the ring/pinion but I took it apart and nothing is wrong, all the teeth on the ring/pinion and the spyder gears look good. 12 shipped.