Rear End help!

Need some help! I installed new upgraded axles, AXC8.75-28.0 in my 8 3/4 rear, seemed easy enough once I had the correct backing plates installed! Now here is where the problem is! With the car on jack stands the wheels turn together with no issue! Also moving the car straight no issue, but as soon as I turn the front wheels and try to move the car the rear gets what I will call a bind, is more difficult to move and then a snap sound and I'm able to push thru the bind, it only frees up for part of a rotation then it does it again! ???
It also does it on both sides depending on if I'm moving it left or right!

I bought the rear used so my 1st suspicion is that perhaps it has a spool or mini spool installed?

Any thoughts are welcome, thank you FABO