Thanks for the help so far guys. I e-mailed Cen and they said they'll send me replacement cups, but i do need to upgrade soon. I bought 10K weight for the front ans 5K for the rear, thats what some were suggesting last month so i got it, but it looks like some of you are running alot thicker oil. My diffs are totally stock right now with the same ol grease they come with.

So i remember reading somewhere to bake the diffs in the over for a while to loosen up the screws, what temp and how long?