i just put my V Spec in it. I will be running on medium and hard dirt mostly. Do the diffs come with lube in them already? I am frustrated with the 8.5. I got it then had to take it apart to put the on/off switch in it well then none of the screws would come out because the alan wrench didnt fit them so I had to dremel them to get them out. Did anyone else have that problem? I tried 6 different alan wrenches and none of them worked. I am going to finish putting it together today. Just have to glue the tires and put the shocks together and mount them.