I've recently bought a ball diff for a TT-01 that came assembled, but when I tried to install it. I couldn't fit the drive shaft into the shaft joints that came with the differential..

can u upload pix?

yeah upload a pic so we can see what went wrong.

By the way, the ball diff was completly assembled when I bought it.

that looks more like a one way diff then a ball diff. have you tried pulling it apart?

How is the one way diff different?
And I can't take it apart.

i see wat ur saying, basically theres three ways u can go about this.
1. try the old diff cups and see if they fit in that.
2. Buy Universals/ CVDs
3. Go Jesse James and start grinding away until it fits.

I just bought the joints that were meant to be purchased with the ball diff.