8-3/4 hard to turn the wheels

I just had a rebuilt 8-3/4 installed on my Duster. With both wheels off the ground, in neutral, it is pretty hard to turn the rear wheels forward by hand, both of them turn when you turn one, and I know they are spinning things in the transmission so there should be some resistance, but it seems excessive, but what gets me is, it is 2x harder to spin the wheels backwards by hand.

What's up with that?
Author: admin