What I am saying is that the car is acting just like its got a spool in it, but I know it doesnt because I took it apart to look at it. Everything seemed to be right. It is a POSI-TRAC if that makes sense. It may have something to do with that adjusting screw in the rear end. As for the other cars, I might have mislead you. When I put the T-maxx on a block and get all four of the wheels off the ground, I can spin the right rear wheel clockwise and the other wheel will spin counter clockwise. I know that is right because that is the way a slip differential works. if it didnt work that way it would break. Im asking if the evader is different as far as the rear end is concerned. Is it supposed to be locked, of is there something wrong with it?