So I had a bad front drum on my 68 roadrunner. It had been turned too thin and cracked. I found a replacement NOS drum so I jumped on it as these are getting pretty difficult to find. The studs in the hub had already been replaced with right hand studs. The drum came off pretty easily and the replacement drum basically goes on and off like a rear drum does now. Were these not meant to be an assembly? I guess all the ones from the factory were swaged to keep them an assembly, but is it ok if it is a slip fit now? I need to know if I need to do something different before putting it back together. The other side is like every other drum brake car I have worked on and the hub is mated to the drum. Thanks in advance.