I know this is an old thread but I just wanted to add what I found yesterday in case it helps somebody that uses the search, and don't think a new thread is worth it.
I had 1 that was tight and tried the above hammer-ear method with no help. Both C clips installed and even though it was difficult to move it still felt smooth so I didn't think a bearing fell off and was in the end of the cap. I decided to check anyway. As soon as I removed the clips it became free. When holding the clips one was noticeably thicker. I tossed it and replaced with a spare. All was good.
Last edited by McCaffrey; 04-23-2014 at 12:06 PM.