Does the rear section of this Slash 4x4 Ultimate look and most importantly sound ok?

I was having some concerning grinding sounds coming from my Slash 4x4 Ultimate. I could also feel varying levels of resistance when free spinning the front wheels after disconnecting them from the motor. I narrowed it down to probably being the front differential. In the process of trying to diagnose the problem I had also taken the rear of the car off which is why I am showing this video now. I just want to be sure before putting it back together that the rear definitely looks and sounds how it should, thanks :)

Also, sorry if this has already been posted, my app has been bugging out.