rear diff. 8.8,excessive play???
 

I can turn the pinion and the ring gear turns rite with it ,no play,, but the axles do not turn right away,excessive play and a lot of it,can feel a slight bit of it when I go forward,it's an open differential, any help,please,I have heard worn spider gears will do this, transmission shop said it was fine but if you rock it back and forth in park you can hear a clunk and the diff will pivot up and down