Limited slip going out........

I can manually turn a wheel which means the limited slip must be going, it still takes about all I got but it will turn. I thought I remeber not being able to do this. Maybe its just my imagination.

What is involved in rebuilding the carrier with new clutches etc.

How much to the parts cost and where can I get them.

Taking the carrier out is no problem since I have done so may R&P's.
Thanks