I have a low end hub on my old ridgid. The hub is only about a year old. It came off my new bike when I went to disc. It is a 4Roc hub. The cone nut became loose. I tried to tighten it, but when it gets finger tight it barely wants to turn. Im assuming it need cleaned and lubed. Now the question. Since it is not sealed bierings will I run into bierings that fall loose when disasembled? Any tricks or directions that will help?