I have just received a volcano epx brushed and just to day I stared to here a clicking noise... Sound like it is coming from the from front Differential. I have noticed that the front right wheel will not turn if I pick the truck up from the ground. It does click louder if I am turning. I looked as close as I could and that side of the differential is loose... All the others seem to be tight and do not jiggle like this side.
any thoughts as I am a newbie.

thanks for the help Cam.

You seem to be on the right track Check your outdrives and dogbones, as well as your diff.