I just opened up my rear 10 bolt for the first time and I have some questions because I don't know jack about diffs. Ok where you have the 4 gears opposite one another with a shaft connecting 2 of them and the others riding against the same shaft if that makes sense ok the gears on the shaft have alot of play in them I can move them with my finger, and when I move the wheels back and forth the gears slosh and clunk some and thats where I figure the clunk comes from when I put it in gear, also the big side mounted gear has a pretty good chip out of one of the teeth. I am towing a trailer to Kansas in a month and need to know what I need to do if anything at all. Thanks ...Chris tree? what tree?