How about this keep it lubed..... Does the car do anything wierd when your driving it and you cant feel it when your driving right? If it still spins free just drive it. Sometimes it goes away when after some club racing but its not affecting your car... It does not seem like the axles are the problem. If its the bearing it will eventually get worse and come apart. I bet when you put the wheel on it spins free and comes to a slow stop. If its going clunk clunk as its spinning it cant be the axle. most likely the bearing